Admin UI Guide

Introduction to the ExtraHop Admin UI

The Admin UI Guide provides detailed information about the administrator features and functionality of the ExtraHop Discover and Command appliances. This guide provides an overview of the global navigation and information about the controls, fields, and options available throughout the UI.

After you have deployed your Discover or Command appliance, see the Discover and Command Post-deployment Checklist.

We value your feedback. Please let us know how we can improve this document. Send your comments or suggestions to documentation@extrahop.com.

Supported browsers

The following browsers are compatible with all ExtraHop systems. Apply the accessibility and compatibility features provided by your browser to access content through assistive technology tools.

  • Firefox
  • Google Chrome
  • Microsoft Edge
  • Safari
Important:Internet Explorer 11 is no longer supported. We recommend that you install the latest version of any supported browser.

Status and Diagnostics

The Status and Diagnostics section provides metrics about the overall health of your ExtraHop system.

Health

The Health page provides a collection of metrics that helps you to monitor the operation of your ExtraHop system and enables ExtraHop Support to troubleshoot system errors if necessary.

System
Reports the following information about the system CPU usage and hard disk.
CPU User
The percentage of CPU usage associated with the ExtraHop system user.
CPU System
The percentage of CPU usage associated with the ExtraHop system.
CPU Idle
The CPU Idle percentage associated with the ExtraHop system.
CPU IO
The percentage of CPU usage associated with the ExtraHop system IO functions.
Bridge Status
Reports the following information about the ExtraHop system bridge component.
VM RSS
The bridge process physical memory in use.
VM Data
The bridge process heap virtual memory in use.
VM Size
The bridge process total virtual memory in use.
Start Time
Specifies the start time for the ExtraHop system bridge component.
Capture Status
Reports the following information about the ExtraHop system network capture status.
VM RSS
The network capture process physical memory in use.
VM Data
The network capture process heap virtual memory in use.
VM Size
The network capture process total virtual memory in use.
Start Time
The start time for the ExtraHop network capture.
Service Status
Reports the status of ExtraHop system services.
exalerts
The amount of time the ExtraHop system alert service has been running.
extrend
The amount of time the ExtraHop system trend service has been running.
exconfig
The amount of time the ExtraHop system config service has been running.
exportal
The amount of time the ExtraHop system web portal service has been running.
exshell
The amount of time the ExtraHop system shell service has been running.
Interfaces
Reports the status of ExtraHop system interfaces.
RX packets
The number of packets received by the specified interface on the ExtraHop system.
RX Errors
The number of received packet errors on the specified interface.
RX Drops
The number of received packets dropped by the specified interface.
TX Packets
The number of packets transmitted by the specified interface on the ExtraHop system.
TX Errors
The number of transmitted packet errors on the specified interface.
TX Drops
The number of transmitted packets dropped by the specified interface.
RX Bytes
The number of bytes received by the specified interface on the ExtraHop system.
TX Bytes
The number of bytes transmitted by the specified interface on the ExtraHop system.
Partitions
Reports the memory that has been allocated to system components for the ExtraHop system.
Name
The system components that have a memory partition in NVRAM.
Options
The read-write options for the system components.
Size
The partition size in gigabytes that is allocated for the system component.
Utilization
The amount of memory that is currently consumed by the system components, as a quantity and as a percentage of the total partition.

Audit Log

The audit log provides data about the operations of your ExtraHop system, broken down by component. The audit log lists all known events by timestamp, in reverse chronological order.

If you experience an issue with the ExtraHop system, consult the audit log to view detailed diagnostic data to determine what might have caused the issue.

Send audit log data to a remote syslog server

The audit log collects data about ExtraHop system operations, broken down by component. The log stored on the system has a capacity of 10,000 entries, and entries older than 90 days are automatically removed. You can view these entries in the Administration settings, or you can send the audit log events to a syslog server for long-term storage, monitoring, and advanced analysis. All logged events are listed in the table below.

The following steps show you how to configure the ExtraHop system to send audit log data to a remote syslog server.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Status and Diagnostics section, click Audit Log.
  3. Click Configure Syslog Settings.
  4. In the Destination field, type the IP address of the remote syslog server.
  5. From the Protocol drop-down menu, select TCP or UDP. This option specifies the protocol over which the information is sent to your remote syslog server.
  6. In the Port field, type the port number for your remote syslog server. By default, this value is set to 514.
  7. Click Test Settings to verify that your syslog settings are correct. If the settings are correct, you should see an entry in the syslog log file on the syslog server similar to the following:
    Jul 27 21:54:56 extrahop name="ExtraHop Test" event_id=1
  8. Click Save.

Next steps

After you confirm that your new settings are working as expected, preserve your configuration changes by saving the Running Config file.
Audit log events

The following events on an ExtraHop system generate an entry in the audit log.

Category Event
Agreements
  • A EULA or POC agreement is agreed to
API
  • An API key is created
  • An API key is deleted
  • A user is created.
  • A user is modified.
Appliance Migration
  • An appliance migration is started
  • An appliance migration succeeded
  • An appliance migration failed
Browser sessions
  • A specific browser session is deleted
  • All browser sessions are deleted
Cloud Services
  • Status of a connected sensor is retrieved
Command appliance
  • A Discover appliance connects to a Command appliance
  • A Discover appliance disconnects from a Command appliance
  • An Explore or Trace appliance establishes a tunneled connection to a Command appliance
  • Command appliance information is set
  • A Command nickname is set
  • Enable or disable a Discover appliance
  • The Discover appliance is remotely viewed
  • A license for a Discover appliance is checked by a Command appliance
  • A license for a Discover appliance is set by a Command appliance
Dashboards
  • A dashboard is created
  • A dashboard is renamed
  • A dashboard is deleted
  • A dashboard permalink, also known as a short code, is modified
  • Dashboard sharing options are modified
Datastore
  • The extended datastore configuration is modified
  • The datastore is reset
  • A datastore reset completed
  • Customizations are saved
  • Customizations are restored
  • Customizations are deleted
Detections
  • An investigation status is updated
  • An investigation assignee is updated
  • Investigation notes are updated
  • An external ticket is updated
  • A detection rule is added
  • A detection rule description is updated
  • A detection rule is enabled
  • A detection rule is disabled
  • A detection rule is extended
Exception files
  • An exception file is deleted
Explore appliance records
  • All Explore appliance records are deleted
Explore cluster
  • A new Explore node is initialized
  • A node is added to an Explore cluster
  • A node is removed from an Explore cluster
  • A node joins an Explore cluster
  • A node leaves an Explore cluster
  • A Discover or Command appliance is connected to an Explore appliance
  • A Discover or Command appliance is disconnected from an Explore appliance
  • An Explore node is removed or missing, but not through a supported interface
ExtraHop Update Service
  • A detection category is updated
  • A detection definition is updated
  • A detection trigger is updated
  • A ransomware definition is updated
  • Detection metadata is updated
  • Expanded detection content is updated
Firmware
  • Firmware is upgraded
Global Policies
  • Global policy for detections access is updated
License
  • A new static license is applied
  • License server connectivity is tested
  • A product key is registered with the license server
  • A new license is applied
Login to the ExtraHop system
  • A login succeeds
  • A login fails
Login from SSH or REST API
  • A login succeeds
  • A login fails
Network
  • A network interface configuration is edited
  • The hostname or DNS setting is changed
  • A network interface route is changed
Offline capture
  • An offline capture file is loaded
PCAP
  • A packet capture (PCAP) file is downloaded
Remote Access
  • Remote access for ExtraHop Support Team is enabled.
  • Remote access for ExtraHop Support Team is disabled.
  • Remote access for ExtraHop Atlas Analysts is enabled.
  • Remote access for ExtraHop Atlas Analysts is disabled.
  • Remote access for ExtraHop Support is enabled.
  • Remote access for ExtraHop Support is disabled.
RPCAP
  • An RPCAP configuration is added
  • An RPCAP configuration is deleted
Running Config
  • The running configuration file changes
SAML Identity Provider
  • An identity provider is added
  • An identity provider is modified
  • An identity provider is deleted
SAML login
  • A login succeeds
  • A login fails
SAML privileges
  • A privilege level is granted
  • A privilege level is denied
SSL decryption
  • An SSL decryption key is saved
SSL session keys
  • A PCAP session key is downloaded
Support account
  • The support account is disabled
  • The support account is enabled
  • The support SSH key is regenerated
Support Script
  • A default support script is running
  • A past support script result is deleted
  • A support script is uploaded
Syslog
  • Remote syslog settings are updated
System and service status
  • The system starts up
  • The system shuts down
  • The system is restarted
  • The bridge, capture, or portal process is restarted
  • A system service is enabled (such as SNMP, web shell, management, SSH)
  • A system service is disabled (such as SNMP, web shell, /management, SSH)
System time
  • The system time is set
  • The system time is changed
  • The system time is set backwards
  • NTP servers are set
  • The time zone is set
  • A manual NTP synchronization is requested
System user
  • A user is added
  • User metadata is edited
  • A user is deleted
  • A user password is set
  • A user other than the setup user attempts to modify the password of another user
  • A user password is updated
Trace appliance
  • A new Trace appliance is initialized.
  • A Discover or Command appliance is connected to a Trace appliance.
  • A Discover or Command appliance is disconnected from a Trace appliance
Trace appliance packetstore
  • A Trace appliance packetstore is reset
Trends
  • A trend is reset
Triggers
  • A trigger is added
  • A trigger is edited
  • A trigger is deleted
User Groups
  • A local user group is created
  • A local user group is deleted
  • A local user group is enabled
  • A local user group is disabled

Fingerprint

Fingerprints help secure appliances from machine-in-the-middle attacks by providing a unique identifier that can be verified when connecting ExtraHop appliances.

When connecting an Explore or Trace appliance with a Discover appliance or Command appliance, make sure that the fingerprint displayed is exactly the same as the fingerprint shown on the join or pairing page.

If the fingerprints do not match, communications between the devices might have been intercepted and altered.

Exception Files

Exception files are a core file of the data stored in memory. When you enable the Exception File setting, the core file is written to the disk if the system unexpectedly stops or restarts. This file can help ExtraHop Support diagnose the issue.

  • Click Enable Exception Files or Disable Exception Files to enable or disable the saving of exception files.

Support Scripts

ExtraHop Support might provide a support script that can apply a special setting, make a small adjustment to the ExtraHop system, or provide help with remote support or enhanced settings. The Administration settings enable you to upload and run support scripts.

Run the default support script

The default support script gathers information about the state of the ExtraHop system for analysis by ExtraHop Support.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Status and Diagnostics section, click Support Scripts.
  3. Click Run Default Support Script.
  4. Click Run.
    When the script completes, the Support Script Results page appears.
  5. Click the name of the diagnostic support package that you want to download. The file saves to the default download location on your computer.
    Send this file, typically named diag-results-complete.expk, to ExtraHop Support.

    The .expk file is encrypted and the contents are only viewable by ExtraHop Support. However, you can download the diag-results-complete.manifest file to view a list of the files collected.

Run a custom support script

If you receive a custom support script from ExtraHop Support complete the following procedure to make a small adjustment to the system or apply enhanced settings.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Status and Diagnostics section, click Support Scripts.
  3. Click Run Custom Support Script.
  4. Click Choose File, navigate to the diagnostic support script you want to upload, and then click Open.
  5. Click Upload to run the file on the ExtraHop system.
    ExtraHop Support will confirm that the support script achieved the desired results.

Network Settings

The Network Settings section provides configuration settings for your ExtraHop system. These settings enable you to set a hostname, configure notifications, and manage connections to your system.

Connect to ExtraHop Cloud Services

ExtraHop Cloud Services provides access to ExtraHop cloud-based services through an encrypted connection. The services you are connected to are determined by your system license.

After the connection is established, information about the available services appear on the ExtraHop Cloud Services page.
  • ExtraHop Machine Learning Service enables detections for your ExtraHop system. In Reveal(x) Enterprise, you can enable security-only or security and performance detections. In addition, you can allow the ExtraHop Machine Learning Service to access pre-filtered, plaintext external IP addresses as well as plaintext domains and hostnames. These settings enable the system to identify new categories of detections and improve the accuracy of existing detections.
  • ExtraHop Update Service enables automatic updates of resources to the ExtraHop system, such as ransomware packages.
  • ExtraHop Remote Access enables you to allow ExtraHop account team members, ExtraHop Atlas analysts, and ExtraHop Support to connect to your ExtraHop system for configuration help. If you have signed up for the Atlas Remote Analysis service, ExtraHop analysts can perform an unbiased analysis of your network data and report on areas in your IT infrastructure where improvements can be made. See the Remote Access FAQ for more information about remote access users.

Before you begin

  • Reveal(x) 360 systems are automatically connected to ExtraHop Cloud Services, however, you might need to allow access through network firewalls.
  • You must apply the relevant license on the ExtraHop system before you can connect to ExtraHop Cloud Services. See the License FAQ for more information.
  • You must have unlimited privileges to access Administration settings.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click ExtraHop Cloud Services.
  3. Click Terms and Conditions to read the content.
  4. Read the terms and conditions, and then select the checkbox.
  5. Click Connect to ExtraHop Cloud Services.
    After you are connected, the page updates to show status and connection information for each service.
If the connection fails, there might be an issue with your firewall rules.

Configure your firewall rules

If your ExtraHop system is deployed in an environment with a firewall, you must open access to ExtraHop Cloud Services. For Reveal(x) 360 systems that are connected to self-managed sensors, you must also open access to the ExtraHop Cloud Recordstore.

Open access to Cloud Services

For access to ExtraHop Cloud Services, your sensors must be able to resolve DNS queries for *.extrahop.com and access TCP 443 (HTTPS) from the IP address that corresponds to your sensor license:

  • 35.161.154.247 (Portland, U.S.A.)
  • 54.66.242.25 (Sydney, Australia)
  • 52.59.110.168 (Frankfurt, Germany)
Open access to Cloud Recordstore

For access to the ExtraHop Cloud Recordstore, your sensors must be able to access outbound TCP 443 (HTTPS) to these fully-qualified domain names:

  • bigquery.googleapis.com
  • oauth2.googleapis.com
  • www.googleapis.com
  • www.mtls.googleapis.com
  • iamcredentials.googleapis.com

You can also review the public guidance from Google about computing possible IP address ranges for googleapis.com.

In addition to configuring access to these domains, you must also configure the global proxy server settings.

Connect to ExtraHop Cloud Services through a proxy

If you do not have a direct internet connection, you can try connecting to ExtraHop Cloud Services through an explicit proxy. If your proxy acts as a "man-in-the-middle", ensure that CONNECT requests are allowed over port 22.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click Connectivity.
  3. Click Enable ExtraHop Cloud Proxy.
  4. Type the hostname for your proxy server, such as proxyhost.
  5. Type the port for your proxy server, such as 8080.
  6. (Optional): If required, type a user name and password for your proxy server.
  7. Click Save.

Bypass certificate validation

Some environments are configured so that encrypted traffic cannot leave the network without inspection by a third-party device. This device can act as an SSL/TLS endpoint that decrypts and re-encrypts the traffic before sending the packets to ExtraHop Cloud Services.

If the ExtraHop system cannot connect to the proxy server because the certificate validation has failed, you can bypass certificate validation and then connect to ExtraHop Cloud Services.
Note:The following procedure requires familiarity with modifying the ExtraHop Running Configuration file.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Appliance Settings section, click Running Config.
  3. Click Edit config.
  4. Add the following line to the end of the Running Config file:
    "hopcloud": { "verify_outer_tunnel_cert": false }
  5. Click Update.
  6. Click View and Save Changes.
  7. Review the changes and click Save.
  8. Click Done.

Connectivity

The Connectivity page contains controls for your appliance connections and network settings.

Interface Status
On physical appliances, a diagram of interface connections appears, which updates dynamically based on the port status.
  • The blue Ethernet port is for management
  • A black Ethernet port indicates a licensed and enabled port that is currently down
  • A green Ethernet port indicates an active, connected port
  • A gray Ethernet port indicates a disabled or unlicensed port
Network Settings
  • Click Change Settings to add a hostname for your ExtraHop appliance or to add DNS servers.
Proxy Settings
  • Enable a global proxy to connect to an ExtraHop Command appliance
  • Enable a cloud proxy to connect to ExtraHop Cloud Services
Bond Interface Settings
  • Create a bond interface to bond multiple interfaces together into one logical interface with a single IP address.
Interfaces
View and configure your management and monitoring interfaces. Click any interface to display setting options.

Configure an interface

  1. In the Network Settings section, click Connectivity.
  2. In the Interfaces section, click the name of the interface you want to configure.
  3. On the Network Settings for Interface <interface number> page, select one of the following options from the Interface Mode drop-down:
    Option Description
    Disabled The interface is disabled.
    Monitoring Port (receive only) Monitors network traffic.
    Management Port Manages the ExtraHop appliance.
    Management Port + Flow Target Manages the ExtraHop appliance and captures traffic forwarded from a flow network.
    Note:If you enable NetFlow on the EDA 1100 or EDA 1000v, you must disable Interface 2. These appliances cannot process NetFlow and wire data simultaneously.
    Management Port + RPCAP/ERSPAN/VXLAN Target Manages the ExtraHop appliance and captures traffic forwarded from a packet forwarder, ERSPAN*, or VXLAN**.
    While 10 GbE management + capture interfaces on the EDA 10200, EDA 9200, and ETA 8250 can conduct management functions at 10 Gbps speeds, processing traffic such as ERSPAN is limited to 1 Gbps.
    Tip:In environments with asymmetric routing adjacent to the high-performance interfaces, ping replies might not get back to the sender.
    High-Performance ERSPAN/VXLAN Target Captures traffic forwarded from ERSPAN* or VXLAN**. This interface mode enables the port to handle more than 1 Gbps. Set this interface mode if the ExtraHop appliance has a 10 GbE port.
    *The ExtraHop system supports the following ERSPAN implementations:
    • ERSPAN Type I
    • ERSPAN Type II
    • ERSPAN Type III
    • Transparent Ethernet Bridging. ERSPAN-like encapsulation commonly found in virtual switch implementations such as the VMware VDS and Open vSwitch.

    **Virtual Extensible LAN (VXLAN) packets are received on UDP port 4789.

    Note:For Amazon Web Services (AWS) deployments with one interface, you must select Management Port + RPCAP/ERSPAN/VXLAN Target for Interface 1. If you are configuring two interfaces, you must select Management Port + RPCAP/ERSPAN/VXLAN Target for Interface 1 and Management Port + RPCAP/ERSPAN/VXLAN Target for Interface 2.
  4. (Optional): Select an interface speed. Auto-negotiate is selected by default, however, you should manually select a speed if it is supported on your appliance, network transceiver, and network switch.
    • Auto-negotiate
    • 10 Gbps
    • 25 Gbps
    • 40 Gbps
    • 100 Gbps
    Important:When you change the interface speed to Auto-negotiate, you might need to restart the appliance before the change takes effect.
  5. DHCPv4 is enabled by default. If your network does not support DHCP, you can clear the DHCPv4 checkbox to disable DHCP and then type a static IP address, netmask, and default gateway.
    Note:Only one interface should be configured with a default gateway. Configure static routes if your network requires routing through multiple gateways.
  6. (Optional): Enable IPv6.
    For more information about configuring IPv6, see Enable IPv6 for an interface.
  7. (Optional): Manually add routes.
    Note:If the data feed for a High Performance ERSPAN/VXLAN Target interface is routed from a remote subnet, configure a static route for the originating IP to ensure the feed is processed.
  8. Click Save.
Interface throughput

ExtraHop appliance models EDA 6100, EDA 8100 and EDA 9100 are optimized to capture traffic exclusively on 10GbE ports.

Enabling the 1GbE interfaces for monitoring traffic can impact performance, depending on the ExtraHop appliance. While you can optimize these appliances to capture traffic simultaneously on both the 10GbE ports and the three non-management 1GbE ports, we recommend that you contact ExtraHop Support for assistance to avoid reduced throughput.

Note:EDA 6200, EDA 8200, EDA 9200, and EDA 10200 appliances are not susceptible to reduced throughput if you enable 1GbE interfaces for monitoring traffic.
ExtraHop Appliance Throughput Details
EDA 9100 Standard 40Gbps throughput If the non-management 1GbE interfaces are disabled, you can use up to four of the 10GbE interfaces for a combined throughput of up to 40Gbps.
EDA 8100 Standard 20Gbps throughput If the non-management 1GbE interfaces are disabled, you can use either one or both of the 10GbE interfaces for a combined throughput of up to 20Gbps.
EDA 6100 Standard 10Gbps throughput If the non-management 1GbE interfaces are disabled, the maximum total combined throughput is 10Gbps.
EDA 3100 Standard 3Gbps throughput No 10GbE interface
EDA 1100 Standard 1Gbps throughput No 10GbE interface
Set a static route

Before you begin

You must disable DHCPv4 before you can add a static route.
  1. On the Edit Interface page, ensure that the IPv4 Address and Netmask fields are complete and saved, and click Edit Routes.
  2. In the Add Route section, type a network address range in CIDR notation in the Network field and IPv4 address in the Via IP field and then click Add.
  3. Repeat the previous step for each route you want to add.
  4. Click Save.
Enable IPv6 for an interface
  1. In the Network Settings section, click Connectivity.
  2. In the Interfaces section, click the name of the interface you want to configure.
  3. On the Network Settings for Interface <interface number> page, select Enable IPv6.
    IPv6 configuration options appear below Enable IPv6.
  4. (Optional): Configure IPv6 addresses for the interface.
    • To automatically assign IPv6 addresses through DHCPv6, select Enable DHCPv6.
      Note:If enabled, DHCPv6 will be used to configure DNS settings.
    • To automatically assign IPv6 addresses through stateless address autoconfiguration, select one of the following options from the Stateless Address Autoconfiguration list:
      Use MAC address
      Configures the appliance to automatically assign IPv6 addresses based on the MAC address of the appliance.
      Use stable private address
      Configures the appliance to automatically assign private IPv6 addresses that are not based on hardware addresses. This method is described in RFC 7217.
    • To manually assign one or more static IPv6 addresses, type the addresses in the Static IPv6 Addresses field.
  5. To enable the appliance to configure Recursive DNS Server (RDNSS) and DNS Search List (DNSSL) information according to router advertisements, select RDNSS/DNSSL.
  6. Click Save.

Global proxy server

If your network topology requires a proxy server to enable your ExtraHop system to communicate either with a Command appliance or with other devices outside of the local network, you can enable your ExtraHop system to connect to a proxy server you already have on your network. Internet connectivity is not required for the global proxy server.

Note:Only one global proxy server can be configured per ExtraHop system.

Complete the following fields and click Save to enable a global proxy.

Hostname: The hostname or IP address for your global proxy server.

Port: The port number for your global proxy server.

Username: The name of a user that has privileged access to your global proxy server.

Password: The password for the user specified above.

ExtraHop Cloud proxy

If your ExtraHop system does not have a direct internet connection, you can connect to the internet through a proxy server specifically designated for ExtraHop Cloud services connectivity. Only one proxy can be configured per system.

Note:If no cloud proxy server is enabled, the ExtraHop system will attempt to connect through the global proxy. If no global proxy is enabled, the system will connect through an HTTP proxy to enable the services.

Complete the following fields and click Save to enable a cloud proxy.

Hostname: The hostname or IP address for your cloud proxy server.

Port: The port number for your cloud proxy server.

Username: The name of a user that has for access to your cloud proxy server.

Password: The password for the user specified above.

Bond interfaces

You can bond multiple 1GbE interfaces on your ExtraHop system together into a single logical interface that has one IP address for the combined bandwidth of the member interfaces. Bonding interfaces enable a larger throughput with a single IP address. This configuration is also known as link aggregation, port channeling, link bundling, Ethernet/network/NIC bonding, or NIC teaming. Only 1GbE interfaces are supported for bond interfaces. Bond interfaces cannot be set to monitoring mode.

Note:When you modify bond interface settings, you lose connectivity to your ExtraHop system. You must make changes to your network switch configuration to restore connectivity. The changes required are dependent on your switch. Contact ExtraHop Support for assistance before you create a bond interface.

Interfaces chosen as members of a bond interface are no longer independently configurable and are shown as Disabled (bond member) in the Interfaces section of the Connectivity page. After a bond interface is created, you cannot add more members or delete existing members. The bond interface must be destroyed and recreated.

Create a bond interface

You can create a bond interface with at least one interface member and up to the number of members that are available for bonding.

  1. Click Create Bond Interface.
  2. Configure the following options:

    Members: Select the checkbox next to each interface you want to include in the bonding. Only ports that are currently available for bond membership appear.

    Take Settings From: Select the interface that has the settings you want to apply to the bond interface. Settings for all non-selected interfaces will be lost.

    Bond Type: Specify whether to create a static bond or a dynamic bond through IEEE 802.3ad Link Aggregation (LACP).

    Hash Policy: Specify the hash policy. The Layer 3+4 policy balances the distribution of traffic more evenly across interfaces; however, this policy is not fully compliant with 802.3ad standards. The Layer 2+3 policy balances traffic less evenly and is compliant with 802.3ad standards.

  3. Click Create.
Refresh the page to display the Bond Interfaces section. Any bond interface member whose settings were not selected in the Take Settings From drop-down menu are shown as Disabled (bond member) in the Interfaces section.
Modify bond interface settings

After a bond interface is created, you can modify most settings as if the bond interface is a single interface.

  1. In the Network Settings section, click Connectivity.
  2. In the Bond Interfaces section, click the bond interface you want to modify.
  3. On the Network Settings for Bond Interface <interface number> page, modify the following settings as needed:

    Members: The interface members of the bond interface. Members cannot be changed after a bond interface is created. If you need to change the members, you must destroy and recreate the bond interface.

    Bond Mode: Specify whether to create a static bond or a dynamic bond through IEEE 802.3ad Link Aggregation (LACP).

    Interface Mode: The mode of the bond membership. A bond interface can be Management or Management+RPCAP/ERSPAN Target only.

    Enable DHCPv4: If DHCP is enabled, an IP address for the bond interface is automatically obtained.

    Hash Policy: Specify the hash policy. The Layer 3+4 policy balances the distribution of traffic more evenly across interfaces; however, it is not fully compliant with 802.3ad standards. The Layer 2+3 policy balances traffic less evenly; however, it is compliant with 802.3ad standards.

    IPv4 Address: The static IP address of the bond interface. This setting is unavailable if DHCP is enabled.

    Netmask: The network netmask for the bond interface.

    Gateway: The IP address of the network gateway.

    Routes: The static routes for the bond interface. This setting is unavailable if DHCP is enabled.

  4. Click Save.
Destroy a bond interface

When a bond interface is destroyed, the separate interface members of the bond interface return to independent interface functionality. One member interface is selected to retain the interface settings for the bond interface and all other member interfaces are disabled. If no member interface is selected to retain the settings, the settings are lost and all member interfaces are disabled.

  1. In the Network Settings section, click Connectivity.
  2. In the Bond Interfaces section, click the red X next to the interface you want to destroy.
  3. On the Destroy Bond Interface <interface number> page, select the member interface to move the bond interface settings to. Only the member interface selected to retain the bond interface settings remains active, and all other member interfaces are disabled.
  4. Click Destroy.

Flow Networks

You must configure network interface and port settings on the ExtraHop system before you can collect NetFlow or sFlow data from remote flow networks (flow exporters). The ExtraHop system supports the following flow technologies: Cisco NetFlow Version 5 (v5) and Version 9 (v9), AppFlow, IPFIX, and sFlow.

In addition to configuring the ExtraHop system, you must configure your network devices to send sFlow or NetFlow traffic. Refer to your vendor documentation or see sample Cisco configurations in the appendix.

Collect traffic from NetFlow and sFlow devices

You must configure network interface and port settings on the ExtraHop system before you can collect NetFlow or sFlow data from remote flow networks (flow exporters). The ExtraHop system supports the following flow technologies: Cisco NetFlow v5 and v9, AppFlow, IPFIX, and sFlow.

Before you begin

You must log in as a user with unlimited privileges to complete the following steps.
Configure the interface on your ExtraHop system
In addition to configuring the ExtraHop system, you must configure your network devices to send sFlow or NetFlow traffic. Refer to your vendor documentation or see sample Cisco configurations at the end of this document. Note that Cisco ASA firewalls with NetFlow Secure Event Logging (NSEL) are not supported.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click Connectivity.
  3. In the Interfaces section, click the name of the interface that should receive the flow data.
  4. Select Management Port + Flow Target in the Interface Mode drop-down list.
    Note:The EDA 1100, EDA 1100v, and EDA 1000v must be configured for either flow data or wire data because these models cannot process flow data and wire data simultaneously. If these models are configured for flow data, you must set the monitoring port to Disabled.
  5. If Enable DHCPv4 is selected, click Save. Otherwise, configure the remaining network settings and then click Save.
Configure the flow type and the UDP port
  1. In the Network Settings section, click Flow Networks.
  2. In the Ports section, type the UDP port number in the Port field. The default port for Net Flow is 2055 and the default port for sFlow is 6343. You can add additional ports as needed for your environment.
  3. From the Flow Type drop-down menu, select NetFlow or sFlow. For AppFlow traffic, select NetFlow.
  4. Click the plus icon (+) to add the port.
  5. Save the running configuration file to preserve your changes by clicking View and Save Changes at the top of the Flow Networks page, and then click Save.
Add the pending flow networks
  1. In the Network Settings section, click Flow Networks
  2. In the Pending Flow Networks section click Add Flow Network.
  3. Type a name to identify this flow network in the Flow Network ID field.
  4. Select the Automatic records checkbox to send records from this flow network to a connected recordstore.
  5. Select the Enable SNMP polling checkbox to enable SNMP polling.
  6. If you enable SNMP polling, select one of the following options from the SNMP credentials drop-down menu:
    • Inherit from CIDR. If you select this option, the SNMP credentials are applied based on the Shared SNMP Credentials settings.
    • Custom credentials. Select v1, v2, or v3 from the SNMP version drop-down list and then configure the remaining settings for the specific polling type.
  7. Click Save.
    The flow network appears in the Approved Flow Networks table. If you do not see the flow network, you can manually add it by clicking Add Flow Network in the Approved Flow Networks section and completing the information as described above.
View configured flow networks

After you configure your flow networks, log in to the ExtraHop system to view built-in charts and modify settings and configurations.

  1. Log in to the ExtraHop system through https://<extrahop-hostname-or-IP-address>.
  2. Click Assets and then click Networks.
  3. Click the drop-down arrow next to the flow network name to see a list of flow interfaces and their attributes.
  4. Select the checkbox next to the flow network or interface name. From the top bar, you can create a chart, assign a trigger, assign an alert, rename the flow interface, and set the interface speed.
    Note:Each NetFlow record contains the interface index (ifIndex) of the reporting interface. The interface table (ifTable) is then polled by the ExtraHop system to obtain the interface speed (ifSpeed).
  5. Click the flow network name or flow interface name to view built-in charts on summary pages. From the summary pages, you can click the regions and charts and add them to a new or existing dashboard.
Configure Cisco NetFlow devices

The following examples of basic Cisco router configuration for NetFlow. NetFlow is configured on a per-interface basis. When NetFlow is configured on the interface, IP packet flow information is exported to the ExtraHop system.

Important:NetFlow takes advantage of the SNMP ifIndex value to represent ingress and egress interface information in flow records. To ensure consistency of interface reporting, enable SNMP ifIndex persistence on devices sending NetFlow to the ExtraHop system. For more information on how to enable SNMP ifIndex persistence on your network devices, refer to the configuration guide provided by the device manufacturer.

For more information on configuring NetFlow on Cisco switches, see your Cisco router documentation or the Cisco website at www.cisco.com.

Configure an exporter on the Cisco Nexus switch

Define a flow exporter by specifying the export format, protocol, and destination.

Log in to the switch command-line interface and run the following commands:
  1. Enter global configuration mode:
    config t
  2. Create a flow exporter and enter flow exporter configuration mode.
    flow exporter <name>
    For example:
    flow exporter Netflow-Exporter-1
  3. (Optional) Enter a description:
    description <string>
    For example:
    description Production-Netflow-Exporter
  4. Set the destination IPv4 or IPv6 address for the exporter.
    destination <eda_mgmt_ip_address>
    For example:
    destination 192.168.11.2
  5. Specify the interface needed to reach the NetFlow collector at the configured destination.
    source <interface_type> <number>
    For example:
    source ethernet 2/2
  6. Specify the NetFlow export version:
    version 9
Configure Cisco switches through the Cisco IOS CLI
  1. Log in to the Cisco IOS command-line interface and run the following commands.
  2. Enter global configuration mode:
    config t
  3. Specify the interface, and enter interface configuration mode.
    • Cisco 7500 series routers:
      interface <type> <slot>/<port-adapter>/<port>
      For example:
      interface fastethernet 0/1/0
    • Cisco 7200 series routers:
      interface <type> <slot>/<port>
      For example:
      interface fastethernet 0/1
  4. Enable NetFlow:
    ip route-cache flow
  5. Export NetFlow statistics:
    ip flow-export <ip-address> <udp-port> version 5

    Where <ip-address> is the Management Port + Flow Target interface on the ExtraHop system and <udp-port> is the configured collector UDP port number.

Set up shared SNMP credentials for your NetFlow or sFlow networks

If you enable SNMP polling on your flow network configuration, you must specify the credentials that allow you to poll the network device. The SNMP authentication credentials apply to all flow networks in a CIDR block and are automatically applied to every discovered flow network unless custom credentials are configured.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click Flow Networks.
  3. In the Shared SNMP Credentials section, click Add SNMP Credentials.
  4. Type the IPv4 CIDR block in the CIDR field. For example, type 10.0.0.0/8 to match any IP address that starts with 10 or 10.10.0.0/16 to match any IP address that starts with 10.10. You cannot configure an IP address to match all traffic.
  5. Select v1, v2c, or v3 from the SNMP version drop-down list and then complete the remaining fields.
  6. Click Save.
Manually refresh SNMP information
You can poll and retrieve data on demand from the SNMP agent on a flow network device. Instead of waiting for automatic polling to occur after each configuration change to confirm that the change is correct (automatic polling occurs every 24 hours), you can poll immediately.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Actions column for the approved flow network, click Poll.
    The ExtraHop system polls for the following information:
    • The system name of the SNMP agent. This identifier is assigned by SNMP to the flow network. OID: 1.3.6.1.2.1.1.5.0.
    • The interface name of each interface on the SNMP agent. These identifiers are for each flow interface on the flow network. OID: 1.3.6.1.2.1.2.2.1.2.
    • The interface speed of each interface on the SNMP agent. OID: 1.3.6.1.2.1.2.2.1.5 and 1.3.6.1.2.1.31.1.1.1.15.

Notifications

The ExtraHop system can send notifications about configured alerts through email, SNMP traps, and syslog exports to remote servers. If an email notification group is specified, then emails are sent to the groups assigned to the alert.

Configure email settings for notifications

You must configure an email server and sender before the ExtraHop system can send alert notifications or scheduled reports.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click Notifications.
  3. Click Email Server and Sender.
  4. In the SMTP Server field, type the IP address or hostname for the outgoing SMTP mail server. The SMTP server should be the fully qualified domain name (FQDN) or IP address of an outgoing mail server that is accessible from the ExtraHop system. If the DNS server is set, then the SMTP server can be a FQDN, otherwise you must type an IP address.
  5. In the SMTP Port field, type the port number for SMTP communication. Port 25 is the default value for SMTP and port 465 is the default value for SSL/TLS encrypted SMTP.
  6. Select one of the following encryption methods from the Encryption drop-down list:
    • None. SMTP communication is not encrypted.
    • SSL/TLS. SMTP communication is encrypted through the Secure Socket Layer/Transport Layer Security protocol.
    • STARTTLS. SMTP communication is encrypted through STARTTLS.
  7. In the Alert Sender Address field, type the email address for the notification sender.
    Note:The displayed sender address might be changed by the SMTP server. When sending through a Google SMTP server, for example, the sender email is changed to the username supplied for authentication, instead of the originally entered sender address.
  8. (Optional): Select the Validate SSL Certificates checkbox to enable certificate validation. If you select this option, the certificate on the remote endpoint is validated against the root certificate chains specified by the trusted certificates manager. Note that the host name specified in the certificate presented by the SMTP server must match the hostname specified in your SMTP configuration or validation will fail. In addition, you must configure which certificates you want to trust on the Trusted Certificates page. For more information, see Add a trusted certificate to your ExtraHop system
  9. In the Report Sender Address field, type the email address responsible for sending the message. This field is only applicable when sending scheduled reports from a Command appliance or Reveal(x) 360.
  10. Select the Enable SMTP authentication checkbox and then type the SMTP server setup credentials in the Username and Password fields.
  11. (Optional): Click Test Settings, type your email address, and then click Send. You should receive an email message with the subject title ExtraHop Test Email.
  12. Click Save.

Next steps

After you confirm that your new settings are working as expected, preserve your configuration changes through system restart and shutdown events by saving the Running Config file.

Configure an email notification group

Add a list of email addresses to a group, then select the group when you configure email settings for an alert or scheduled report. Although you can specify individual email addresses, email groups are an effective way to manage your recipient list.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click Notifications.
  3. Click Email Notification Groups.
  4. Click Add Group.
  5. In the Group Info section, configure the following information:

    Name: Type a name for the email group.

    System Health Notifications: Select this checkbox if you want to send system storage alerts to the email group. These alerts are generated under the following conditions:

    • A virtual disk is in a degraded state.
    • A physical disk is in a degraded state.
    • A physical disk has an increasing error count.
    • A necessary disk partition is missing for firmware, datastore, or packet capture data.

  6. In the Email Addresses text box, type the recipient email addresses that should receive the emails sent to this group. Email addresses can be entered one per line or separated by a comma, semicolon, or space. Email addresses are checked only for [name]@[company].[domain] format validation. There must be at least one email address in this text box for the group to be valid.
  7. Click Save.

Configure settings to send notifications to an SNMP manager

The state of the network can be monitored through the Simple Network Management Protocol (SNMP). SNMP collects information by polling devices on the network or SNMP enabled devices send alerts to SNMP management stations. SNMP communities define the group that devices and management stations running SNMP belong to, which specifies where information is sent. The community name identifies the group.

Note:Most organizations have an established system for collecting and displaying SNMP traps in a central location that can be monitored by their operations teams. For example, SNMP traps are sent to an SNMP manager, and the SNMP management console displays them.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click Notifications.
  3. Under Notifications, click SNMP.
  4. On the SNMP Settings page, in the SNMP Monitor field, type the hostname for the SNMP trap receiver. Multiple names can be entered, separated by commas.
  5. In the SNMP Community field, enter the SNMP community name.
  6. In the SNMP Port field, type the SNMP port number for your network that is used by the SNMP agent to respond back to the source port on the SNMP manager.
    The default response port is 162.
  7. Click Test Settings to verify that your SNMP settings are correct. If the settings are correct, you should see an entry in the SNMP log file on the SNMP server similar to the following:
    Connection from UDP: [192.0.2.0]:42164->[ 192.0.2.255]:162

    Where 192.0.2.0 is the IP address of your ExtraHop system and 192.0.2.255 is the IP address of the SNMP server.

  8. Click Save.
Download the ExtraHop SNMP MIB

SNMP does not provide a database of information that an SNMP-monitored network reports. SNMP information is defined by third-party management information bases (MIBs) that describe the structure of the collected data.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. Go to the Network Settings section and click Notifications.
  3. Under Notifications, click SNMP.
  4. Under SNMP MIB, click the Download ExtraHop SNMP MIB.
    The file is typically saved to the default download location for your browser.

Send system notifications to a remote syslog server

The syslog export option enables you to send alerts from an ExtraHop system to any remote system that receives syslog input for long-term archiving and correlation with other sources.

Only one remote syslog server can be configured for each ExtraHop system.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click Notifications.
  3. In the Destination field, type the IP address of the remote syslog server.
  4. From the Protocol drop-down menu, select TCP or UDP. This option specifies the protocol over which the information will be sent to your remote syslog server.
  5. In the Port field, type the port number for your remote syslog server. By default, this value is set to 514.
  6. Click Test Settings to verify that your syslog settings are correct. If the settings are correct, you should see an entry in the syslog log file on the syslog server similar to the following:
    Jul 27 21:54:56 extrahop name="ExtraHop Test" event_id=1
  7. Click Save.

Next steps

After you confirm that your new settings are working as expected, preserve your configuration changes through system restart and shutdown events by saving the Running Config file.

SSL Certificate

SSL certificates provide secure authentication to the ExtraHop system.

You can designate a self-signed certificate for authentication instead of a certificate signed by a Certificate Authority. However, be aware that a self-signed certificate generates an error in the client browser, which reports that the signing certificate authority is unknown. The browser provides a set of confirmation pages to trust the certificate, even though the certificate is self-signed. We recommend that you create a certificate-signing request from your ExtraHop system and upload the signed certificate instead.

Important:When replacing an SSL certificate, the web server service is restarted. Tunneled connections from Discover appliances to Command appliances are lost but then re-established automatically.

Upload an SSL certificate

You must upload a .pem file that includes both a private key and either a self-signed certificate or a certificate-authority certificate.

Note:The .pem file must not be password protected.
Note:You can also automate this task through the REST API.
  1. In the Network Settings section, click SSL Certificate.
  2. Click Manage certificates to expand the section.
  3. Click Choose File and navigate to the certificate that you want to upload.
  4. Click Open.
  5. Click Upload.

Generate a self-signed certificate

  1. In the Network Settings section, click SSL Certificate.
  2. Click Manage certificates to expand the section.
  3. Click Build SSL self-signed certificate based on hostname.
  4. On the Generate Certificate page, click OK to generate the SSL self-signed certificate.
    Note:The default hostname is extrahop.

Create a certificate signing request from your ExtraHop system

A certificate signing request (CSR) is a block of encoded text that is given to your Certificate Authority (CA) when you apply for an SSL certificate. The CSR is generated on the ExtraHop system where the SSL certificate will be installed and contains information that will be included in the certificate such as the common name (domain name), organization, locality, and country. The CSR also contains the public key that will be included in the certificate. The CSR is created with the private key from the ExtraHop system, making a key pair.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click SSL Certificate.
  3. Click Manage certificates and then click Export a Certificate Signing Request (CSR).
  4. In the Subject Alternative Names section, type the DNS name of the ExtraHop system. You can add multiple DNS names and IP addresses to be protected by a single SSL Certificate.
  5. In the Subject section, complete the following fields. Only the Common Name field is required.
    Field Description Examples
    Common Name The fully qualified domain name (FQDN) of the ExtraHop system. The FQDN must match one of the Subject Alternative Names. *.example.com

    discover.example.com

    E-mail Address The email address of the primary contact for your organization. webmaster@example.com
    Organizational Unit The division of your organization handling the certificate. IT Department
    Organization The legal name of your organization. This entry should not be abbreviated and should include suffixes such as Inc, Corp, or LLC. Example, Inc.
    Locality/City The city where your organization is located. Seattle
    State/Province The state or province where your organization is located. This entry should not be abbreviated. Washington
    Country Code The two-letter ISO code for the country where your organization is located. US
  6. Click Export. The CSR file is automatically downloaded to your computer.

Next steps

Send the CSR file to your certificate authority (CA) to have the CSR signed. When you receive the SSL certificate from the CA, return to the SSL Certificate page in the Administration settings and upload the certificate to the ExtraHop system.

Trusted Certificates

Trusted certificates enable you to validate SMTP, LDAP, HTTPS ODS and MongoDB ODS targets, as well as Splunk recordstore connections from your ExtraHop system.

Add a trusted certificate to your ExtraHop system

Your ExtraHop system only trusts peers who present a Transport Layer Security (TLS) certificate that is signed by one of the built-in system certificates and any certificates that you upload. SMTP, LDAP, HTTPS ODS and MongoDB ODS targets, as well as Splunk recordstore connections can be validated through these certificates.

Before you begin

You must log in as a user with unlimited privileges to add or remove trusted certificates.
When uploading a custom trusted certificate, a valid trust path must exist from the uploaded certificate to a trusted self-signed root in order for the certificate to be fully trusted. Either upload the entire certificate chain for each trusted certificate or (preferably) ensure that each certificate in the chain has been uploaded to the trusted certificates system.
Important: To trust the built-in system certificates and any uploaded certificates, you must also enable SSL/TLS or STARTTLS encryption and certificate validation when configuring the settings for the external server.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Network Settings section, click Trusted Certificates.
  3. (Optional): The ExtraHop system ships with a set of built-in certificates. Select Trust System Certificates if you want to trust these certificates, and then click Save.
  4. To add your own certificate, click Add Certificate and then paste the contents of the PEM-encoded certificate chain into the Certificate field
  5. Type a name into the Name field and click Add.

Access Settings

In the Access Settings section, you can change user passwords, enable the support account, manage local users and user groups, configure remote authentication, and manage API access.

Global Policies

Administrators can configure global policies that apply to all users who access the system.

Global password policy

  • Choose between two password policies; the default password policy of 5 or more characters or a more secure strict password policy that has the following restrictions:
    • 8 or more characters
    • Upper and lowercase characters
    • At least one number
    • At least one symbol
    Note:If you select the strict password policy of 8 or more characters, passwords will expire every 60 days.

Global privilege policy

  • Detections access control

    Control whether system users can view, acknowledge, and hide detections by granting permission only to individual users or to all privileged users

    • Only specified users can view detections

      Assign detections access to individual local and remote users

    • All users can view detections (except restricted read-only users)

      Assign detections access by privilege. Only the restricted read-only privilege denies access to detections.

Passwords

Users with privileges to the Administration page can change the password for local user accounts.

  • Select any user and change their password
    • You can only change passwords for local users. You cannot change passwords for users authenticated through LDAP or other remote authentication servers.

For more information about privileges for specific Administration page users and groups, see the Users section.

Change the default password for the setup user

It is recommended that you change the default password for the setup user on the ExtraHop system after you log in for the first time. To remind administrators to make this change, there is a blue Change Password button at the top of the page while the setup user is accessing the Administration settings. After the setup user password is changed, the button at the top of the page no longer appears.

Note:The password must be a minimum of 5 characters.
  1. In the Administration settings, click the blue Change default password button.
    The Password page displays without the drop-down menu for accounts. The password will change for the setup user only.
  2. Type the default password in the Old password field.
  3. Type the new password in the New password field.
  4. Retype the new password in the Confirm password field.
  5. Click Save.

Support Access

Support accounts provide access for the ExtraHop Support team to help customers troubleshoot issues with the ExtraHop system.

These settings should be enabled only if the ExtraHop system administrator requests hands-on assistance from the ExtraHop Support team.

Generate SSH key

Generate an SSH key to enable ExtraHop Support to connect to your ExtraHop system when remote access is configured through ExtraHop Cloud Services.
  1. In the Access Settings section, click Support Access.
  2. Click Generate SSH Key.
  3. Click Generate SSH Key.
  4. Copy the encrypted key from the text box and email the key to support@extrahop.com.
  5. Click Done.

Enable the Support UI account

By enabling the Support UI account, you allow the ExtraHop Support team to connect to your Discover appliance and provide remote troubleshooting and configuration assistance.

  1. In the Access Settings section, click Support Account.
  2. Click Support UI Account.
  3. Click Enable Support UI Account.
  4. Copy the encrypted key from the text box and email the key to support@extrahop.com.
  5. Click Done.

Regenerate or revoke the SSH key

To prevent SSH access to the ExtraHop system with an existing SSH key, you can revoke the current SSH key. A new SSH key can also be regenerated if needed.

  1. In the Access Settings section, click Support Access.
  2. Click Generate SSH Key.
  3. Choose one of the following options:
    • Click Regenerate SSH Key and then click Regenerate.

      Copy the encrypted key from the text box and email the key to support@extrahop.com and then click Done.

    • Click Revoke SSH Key to prevent SSH access to the system with the current key.

Users

The Users page enables you to control local access to the ExtraHop appliance.

Users and user groups

Users can access the ExtraHop system in three ways: through a set of pre-configured user accounts, through local user accounts configured on the appliance, or through remote user accounts configured on existing authentication servers, such as LDAP, SAML, Radius, and TACACS+.

Local users

This topic is about default and local accounts. See Remote Authentication to learn how to configure remote accounts.

The following accounts are configured by default on ExtraHop systems but do not appear in the list of names on the Users page. These accounts cannot be deleted and you must change the default password upon initial login.
setup
This account provides full system read and write privileges to the browser-based user interface and to the ExtraHop command-line interface (CLI). On physical appliances, the default password for this account is the service tag number on the front of the appliance. On virtual appliances, the default password is default.
shell
The shell account, by default, has access to non-administrative shell commands in the ExtraHop CLI. On physical appliances, the default password for this account is the service tag number on the front of the appliance. On virtual appliances, the default password is default.
Note:The default ExtraHop password for either account when deployed in Amazon Web Services (AWS) and Google Cloud Platform (GCP) is the instance ID of the virtual machine.
Remote Authentication

The ExtraHop system supports remote authentication for user access. Remote authentication enables organizations that have authentication systems such as LDAP (OpenLDAP or Active Directory, for example) to enable all or a subset of their users to log in to the system with their existing credentials.

Centralized authentication provides the following benefits:

  • User password synchronization.
  • Automatic creation of ExtraHop accounts for users without administrator intervention.
  • Management of ExtraHop privileges based on user groups.
  • Administrators can grant access to all known users or restrict access by applying LDAP filters.
Remote users

If your ExtraHop system is configured for SAML or LDAP remote authentication, you can create an account for those remote users. Preconfiguring accounts on the ExtraHop system for remote users enables you to share dashboards and other system customizations with those users before they log in.

If you choose to auto-provision users when you configure SAML authentication, then the user is automatically added to the list of local users when they log in for the first time. However, you can create a remote SAML user account on the ExtraHop system when you want to provision a remote user before that user has logged in to the system. Privileges are assigned to the user by the provider. After the user is created, you can add them to local user groups.

User groups

User groups enable you to manage access to shared content by group instead of by individual user. Dashboards and activity maps can be shared with a user group, and any user who is added to the group automatically has access. You can create a local user group—which can include remote and local users. Alternatively, if your ExtraHop system is configured for remote authentication through LDAP, you can configure settings to import your LDAP user groups.

  • Click Create User Group to create a local group. The user group appears in the list. Then, select the checkbox next to the user group name and select users from the Filter users... drop-down list. Click Add Users to Group.
  • (LDAP only) Click Refresh All User Groups or select multiple LDAP user groups and click Refresh Users in Groups.
  • Click Reset User Group to remove all shared content from a selected user group. If the group no longer exists on the remote LDAP server, the group is removed from the user group list.
  • Click Enable User Group or Disable User Group to control whether any group member can access shared content for the selected user group.
  • Click Delete User Group to remove the selected user group from the system.
  • View the following properties for listed user groups:
    Group Name
    Displays the name of the group. To view the members in the group, click the group name.
    Type
    Displays Local or Remote as the type of user group.
    Members
    Displays the number of users in the group.
    Shared Content
    Displays the number of user-created dashboards and activity maps that are shared with the group.
    Status
    Displays whether the group is enabled or disabled on the system. When the status is Disabled, the user group is considered empty when performing membership checks; however, the user group can still be specified when sharing content.
    Members Refreshed (LDAP only)
    Displays the amount of time elapsed since the group membership was refreshed. User groups are refreshed under the following conditions:
    • Once per hour, by default. The refresh interval setting can be modified on the Remote Authentication > LDAP Settings page.
    • An administrator refreshes a group by clicking Refresh All User Groups or Refresh Users in Group, or programmatically through the REST API. You can refresh a group from the User Group page or from within the Member List page.
    • A remote user logs in to the ExtraHop system for the first time.
    • A user attempts to load a shared dashboard that they do not have access to.
User privileges

Administrators determine the level of access and functionality users have with the ExtraHop system. In addition to setting the privilege level for local users, you can enable options for any user privilege level.

For information about user privileges for the REST API, see the REST API Guide.

For information about remote user privileges, see the configuration guides for LDAP, RADIUS, SAML, and TACACS+.

Privilege Levels

Set the privilege level for your user to determine which areas of the ExtraHop system they can access. Users with unlimited or cloud setup privileges can access all areas of the ExtraHop system, including packets, session keys, and detections.

  Unlimited Cloud Setup (Reveal(x) 360 only) Full Write Limited Write Personal Write Full Read-Only Restricted Read-Only
Activity Maps  
Create, view, and load shared activity maps Y Y Y Y Y Y N
Save activity maps Y Y Y Y Y N N
Share activity maps Y Y Y Y N N N
Alerts  
View alerts Y Y Y Y Y Y N
Create and modify alerts Y Y Y N N N N
Bundles  
Create a bundle Y Y Y N N N N
Upload and apply a bundle Y Y Y N N N N
View list of bundles Y Y Y Y Y Y N
Dashboards  
View and organize dashboards Y Y Y Y Y Y Y
Create and modify dashboards Y Y Y Y Y N N
Share dashboards Y Y Y Y N N N
Detections
Note:Machine learning detections require a connection to ExtraHop Cloud Services.

Administrators can configure the Detections Access Control global policy to specify whether all users, or only specified users can access detections. The privilege level of the user determines the level of access to detections.

View detections Y Y Y Y Y Y N
Acknowledge Detections Y Y Y Y Y N N
Modify investigation status and notes Y Y Y Y N N N
Create and modify detection rules (tune detections) Y Y Y N N N N
Analysis Priorities  
View Analysis Priorities page Y Y Y Y Y Y N
Add and modify analysis levels for groups Y Y Y N N N N
Add devices to a watchlist Y Y Y N N N N
Transfer priorities management Y Y Y N N N N
Device Groups  
Create and modify device groups Y Y Y N N N N
Metrics  
View metrics Y Y Y Y Y Y N
Records (Explore appliance)  
View record queries Y Y Y Y Y Y N
View record formats Y Y Y Y Y Y N
Create, modify, and save record queries Y Y Y N N N N
Create, modify, and save record formats Y Y Y N N N N
Scheduled Reports (Command appliance)  
Create, view, and manage scheduled reports Y Y Y Y N N N
Threat Intelligence  
Manage threat collections Y Y N N N N N
View threat intelligence information Y Y Y Y Y Y N
Triggers  
Create and modify triggers Y Y Y N N N N
Administrative Privileges  
Access the ExtraHop Administration settings Y Y N N N N N
Connect to other appliances Y N N N N N N
Manage other appliances (Command appliance) Y N N N N N N
Privilege options

The following privilege options can be assigned to users with limited Web UI and API privileges.

Packet and Session Key Access
  • View and download packets
  • View and download packets and session keys
  • View connected appliances (Command appliance only). Note that this privilege is deprecated and will be unavailable in a future release.
Detections Access
  • No access
  • Full access
    • Full access to detections is determined by your privilege level. See the Privilege Levels table to see what level of detections each privilege level can access.
Note:(Reveal(x) Enterprise only) The Detections Access settings appear only if the global privilege policy for detections access control is set to Only specified users can access detections.

Add a local user account

By adding a local user account, you can provide users with direct access to your ExtraHop system and restrict their privileges as needed by their role in your organization.

To learn about default system user accounts, see Local users.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Access Settings section, click Users.
  3. Click Add User.
  4. In the Personal Information section, type the following information:

    Login ID: The username that users will log in to their ExtraHop appliances with, which cannot contain any spaces. For example, adalovelace.

    Full Name: A display name for the user, which can contain spaces. For example, Ada Lovelace.

    Password: The password for this account.

    Note:On Discover and Command appliances, the password must meet the criteria specified by the global password policy. On Explore and Trace appliances, passwords must be 5 characters or more.

    Confirm Password: Re-type the password from the Password field.

  5. In the Authentication Type section, select Local.
  6. In the User Type section, select the type of privileges for the user.
    • Unlimited privileges enables full read and write access to the ExtraHop system, including Administration settings.
    • Limited privileges enable you to select from a subset of privileges and options.
    Note:For more information, see the User privileges section.
  7. Click Save.
Tip:
  • To modify settings for a user, click the username from the list to bring up the Edit user page.
  • To delete a user account, click the red X icon. If you delete a user from a remote authentication server, such as LDAP, you must also delete the entry for that user on the ExtraHop system.

Add an account for a remote user

Add a user account for LDAP or SAML users when you want to provision the remote user before that user logs in to the ExtraHop system. After the user is added to the system, you can add them to local groups or share items directly with them before they log in through the LDAP or SAML provider.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Access Settings section, click Users.
  3. Click Add User.
  4. In the Personal Information section, type the following information:

    Login ID: The email address that the user logs in to their LDAP or SAML SSO identity provider with.

    Full Name: The first and last name of the user.

  5. In the Authentication Type section, select Remote.
  6. Click Save.

Sessions

The ExtraHop system provides controls to view and delete user connections to the web interface. The Sessions list is sorted by expiration date, which corresponds to the date the sessions were established. If a session expires or is deleted, the user must log in again to access the web interface.

Remote Authentication

The ExtraHop system supports remote authentication for user access. Remote authentication enables organizations that have authentication systems such as LDAP (OpenLDAP or Active Directory, for example) to enable all or a subset of their users to log in to the system with their existing credentials.

Centralized authentication provides the following benefits:

  • User password synchronization.
  • Automatic creation of ExtraHop accounts for users without administrator intervention.
  • Management of ExtraHop privileges based on user groups.
  • Administrators can grant access to all known users or restrict access by applying LDAP filters.

Configure remote authentication through LDAP

The ExtraHop system supports the Lightweight Directory Access Protocol (LDAP) for authentication and authorization. Instead of storing user credentials locally, you can configure your ExtraHop system to authenticate users remotely with an existing LDAP server. Note that ExtraHop LDAP authentication only queries for user accounts; it does not query for any other entities that might be in the LDAP directory.

Before you begin

  • This procedure requires familiarity with configuring LDAP.
  • Ensure that each user is in a permission-specific group on the LDAP server before beginning this procedure.
  • If you want to configure nested LDAP groups, you must modify the Running Configuration file. Contact ExtraHop Support for help.

When a user attempts to log onto an ExtraHop system, the ExtraHop system tries to authenticate the user in the following ways:

  • Attempts to authenticate the user locally.
  • Attempts to authenticate the user through the LDAP server if the user does not exist locally and if the ExtraHop system is configured for remote authentication with LDAP.
  • Logs the user onto the ExtraHop system if the user exists and the password is validated either locally or through LDAP. The LDAP password is not stored locally on the ExtraHop system. Note that you must enter the username and password in the format that your LDAP server is configured for. The ExtraHop system only forwards the information to the LDAP server.
  • If the user does not exist or an incorrect password is entered, an error message appears on the login page.
Important:If you change LDAP authentication at a later time to a different remote authentication method, the users, user groups, and associated customizations that were created through remote authentication are removed. Local users are unaffected.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Access Settings section, click Remote Authentication.
  3. From the Remote authentication method drop-down list, select LDAP and then click Continue.
  4. On the LDAP Settings page, complete the following server information fields:
    1. In the Hostname field, type the hostname or IP address of the LDAP server. If you are configuring a hostname, make sure that the DNS entry of the ExtraHop system is properly configured.
    2. In the Port field, type the port number on which the LDAP server is listening.
    3. From the Server Type drop-down list, select Posix or Active Directory.
    4. (Optional): In the Bind DN field, type the bind DN. The bind DN is the user credentials that allow you to authenticate with the LDAP server to perform the user search. The bind DN must have list access to the base DN and any OU, groups, or user account required for LDAP authentication. If this value is not set, then an anonymous bind is performed. Note that anonymous binds are not enabled on all LDAP servers.
    5. (Optional): In the Bind Password field, type the bind password. The bind password is the password required when authenticating with the LDAP server as the bind DN specified above. If you are configuring an anonymous bind, leave this field blank. In some cases, an unauthenticated bind is possible, where you supply a Bind DN value but no bind password. Consult your LDAP administrator for the proper settings.
    6. From the Encryption drop-down list, select one of the following encryption options.

      None: This options specifies cleartext TCP sockets. All passwords are sent across the network in cleartext in this mode.

      LDAPS: This option specifies LDAP wrapped inside SSL.

      StartTLS: This option specifies TLS LDAP. (SSL is negotiated before any passwords are sent.)

    7. Select Validate SSL Certificates to enable certificate validation. If you select this option, the certificate on the remote endpoint is validated against the root certificates as specified by the trusted certificates manager. You must configure which certificates you want to trust on the Trusted Certificates page. For more information, see Add a trusted certificate to your ExtraHop system.
    8. Type a time value in the Refresh Interval field or leave the default setting of 1 hour. The refresh interval ensures that any changes made to user or group access on the LDAP server are updated on the ExtraHop system.
  5. Configure the following user settings:
    1. Type the base DN in the Base DN field. The Base DN is the point from where a server will search for users. The base DN must contain all user accounts that will have access to the ExtraHop system. The users can be direct members of the base DN or nested within an OU within the base DN if the Whole Subtree option is selected for the Search Scope specified below.
    2. Type a search filter in the Search Filter field. Search filters enable you to define search criteria when searching the LDAP directory for user accounts.
      Important:The ExtraHop system automatically adds parentheses to wrap the filter and will not parse this parameter correctly if you add parentheses manually. Add your search filters in this step and in step 5b, similar to the following example:
      cn=atlas*
      |(cn=EH-*)(cn=IT-*)
      In addition, if your group names include the asterisk (*) character, the asterisk must be escaped as
      \2a. For example, if your group has a CN called test*group, type cn=test\2agroup in the Search Filter field.
    3. From the Search Scope drop-down list, select one of the following options. Search scope specifies the scope of the directory search when looking for user entities.

      Whole subtree: This option looks recursively under the group DN for matching users.

      Single level: This option looks for users that exist in the base DN only; not any subtrees.

  6. (Optional): Import user groups. Select the Import user groups from LDAP server checkbox and configure the following settings.
    Note:Importing LDAP user groups enables you to share dashboards with those groups. The imported groups appear on the User Group page in the Administration settings.
    1. Type the base DN in the Base DN field. The Base DN is the point from where a server will search for user groups. The base DN must contain all user groups that will have access to the ExtraHop system. The user groups can be direct members of the base DN or nested within an OU within the base DN if the Whole Subtree option is selected for the Search Scope specified below.
    2. Type a search filter in the Search Filter field. Search filters enable you to define search criteria when searching the LDAP directory for user groups.
      Important:For group search filters, the ExtraHop system implicitly filters on the objectclass=group, and so objectclass=group should not be added to this filter.
    3. From the Search Scope drop-down list, select one of the following options. Search scope specifies the scope of the directory search when looking for user group entities.

      Whole subtree: This option looks recursively under the base DN for matching user groups.

      Single level: This option looks for user groups that exist in the base DN; not any subtrees.

  7. Click Test Settings. If the test succeeds, a status message appears near the bottom of the page. If the test fails, click Show details to see a list of errors. You must resolve any errors before you continue.
  8. Click Save and Continue.
Configure user privileges for remote authentication

You can assign user privileges to individual users on your ExtraHop system or configure and manage privileges through your LDAP server.

When assigning user privileges through LDAP, you must complete at least one of the available user privilege fields. These fields require groups (not organizational units) that are pre-specified on your LDAP server. A user account with access must be a direct member of a specified group. User accounts that are not a member of a group specified above will not have access. Groups that are not present are not authenticated on the ExtraHop system.

The ExtraHop system supports both Active Directory and POSIX group memberships. For Active Directory, memberOf is supported. For POSIX, memberuid, posixGroups, groupofNames, and groupofuniqueNames are supported.

  1. Choose one of the following options from the Privilege assignment options drop-down list:
    • Obtain privileges level from remote server

      This option assigns privileges through your remote authentication server. You must complete at least one of the following distinguished name (DN) fields.

      Unlimited DN: Create and modify all objects and settings on the ExtraHop system, including Administration settings.

      Full Write DN: Create and modify objects on the ExtraHop system, not including Administration settings.

      Limited Write DN: Create, modify, and share dashboards.

      Personal Write DN: Create personal dashboards and modify dashboards shared with the logged-in user.

      Connected Appliances DN: (Visible only on the Command appliance.) View a list of ExtraHop systems that are connected to the Command appliance.

      Full read-only DN: View objects in the ExtraHop system.

      Restricted Read-only DN: View dashboards shared with the logged-in user.

      Packet Access DN: View and download packets captured through the ExtraHop Trace appliance.

      Packet and Session Keys Access DN: View and download packets and any associated SSL session keys captured through the ExtraHop Trace appliance.

      Detections Access DN: View, acknowledge, and hide detections that appear in the ExtraHop system.

    • Remote users have full write access

      This option grants remote users full write access to the ExtraHop system. In addition, you can grant additional access for packet downloads, SSL session keys, and detections.

    • Remote users have full read-only access

      This option grants remote users read-only access to the ExtraHop system. In addition, you can grant additional access for packet downloads, SSL session keys, and detections.

    • Remote users can view connected appliances (Deprecated)

      This option, which only appears on the Command appliance, grants remote users log in access to the Administration page on the Command appliance to view any connected Discover, Explore, and Trace appliances. Note that this privilege is deprecated and will be unavailable in a future release.

  2. (Optional): Configure packet and session key access. Select one of the following options to allow remote users to download packet captures and SSL session keys.
    • No access
    • Packets only
    • Packets and session keys
  3. (Optional): Configure detections access. Select one of the following options to allow remote users to view detections. This setting is visible only when the global privilege policy for detections access control is set to Only specified users can view detections.
    • No access
    • Full access
  4. Click Save and Finish.
  5. Click Done.

Configure remote authentication through SAML

You can configure secure, single sign-on (SSO) authentication to the ExtraHop system through one or more security assertion markup language (SAML) identity providers.

When a user logs in to an ExtraHop system that is configured as a service provider (SP) for SAML SSO authentication, the ExtraHop system requests authorization from the appropriate identity provider (IdP). The identity provider authenticates the user's credentials and then returns the authorization for the user to the ExtraHop system. The user is then able to access the ExtraHop system.

Configuration guides for specific identity providers are linked below. If your provider is not listed, apply the settings required by the ExtraHop system to your identity provider.

Identity providers must meet the following criteria:
  • SAML 2.0
  • Support SP-initiated login flows. IdP-initiated login flows are not supported.
  • Support signed SAML Responses
  • Support HTTP-Redirect binding

The example configuration in this procedure enables access to the ExtraHop system through group attributes.

If your identity provider does not support group attribute statements, configure user attributes with the appropriate write, packets, and detections access privileges.

Enable SAML remote authentication
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Access Settings section, click Remote Authentication.
  3. Select SAML from the remote authentication method drop-down list and then click Continue.
  • Click View SP Metadata to view the Assertion Consumer Service (ACS) URL and Entity ID of the ExtraHop system. These strings are required by your identity provider to configure SSO authentication. You can also download a complete XML metadata file that you can import into your identity provider configuration.
    Note:The ACS URL includes the hostname configured in Network Settings. If the ACS URL contains an unreachable hostname, such as the default system hostname extrahop, you must edit the URL when adding the ACS URL to your identity provider and specify the fully qualified domain name (FQDN) of the ExtraHop system.
  • Click Add Identity Provider to add the following information:

    Provider Name: Type a name to identify your specific identity provider. This name appears on the ExtraHop system log in page after the Log in with text.

    Entity ID: Paste the entity ID provided by your identity provider into this field.

    SSO URL: Paste the single sign-on URL provided by your identity provider into this field.

    Signing Certificate: Paste the X.509 certificate provided by your identity provider into this field.

    Auto-provision users: When this option is selected, ExtraHop user accounts are automatically created when the user logs in through the identity provider. To manually control which users can log in, clear this checkbox and manually configure new remote users through the ExtraHop Administration settings or REST API. Any manually-created remote username should match the username configured on the identity provider.

    Enable this identity provider: This option is selected by default and allows users to log in to the ExtraHop system. To prevent users from logging in through this identity provider, clear the checkbox.

    User Privilege Attributes: You must configure the following set of user attributes before users can log in to the ExtraHop system through an identity provider. Values are user-definable; however, they must match the attribute names that are included in the SAML response from your identity provider. Values are not case sensitive and can include spaces. For more information about privilege levels, see Users and user groups.

    Important:You must specify the attribute name and configure at least one attribute value other than No access to enable users to log in.
    In the example below, the Attribute Name field is the group attribute configured when creating the ExtraHop application on the identity provider and the attribute value is the name of one of your user groups. If a user is a member of more than one group, the user is granted the most permissive access privilege.

    Packets and Session Key Access: Configuring packets and session key attributes is optional and only required when you have a connected Trace appliance.

    Detections Access: Configuring detections attributes is optional and only required when the global privilege policy is set to Only specified users can view detections. Users with unlimited or cloud setup (Reveal(x) 360) privileges are automatically granted access to detections.

User attribute mapping

You must configure the following set of user attributes in the application attribute mapping section on your identity provider. These attributes identify the user throughout the ExtraHop system. Refer to your identity provider documentation for the correct property names when mapping attributes.

ExtraHop Attribute Name Friendly Name Category Identity Provider Attribute Name
urn:oid:0.9.2342.19200300.100.1.3 mail Standard Attribute Primary email address
urn:oid:2.5.4.4 sn Standard Attribute Last name
urn:oid:2.5.4.42 givenName Standard Attribute First name


Group attribute statements

The ExtraHop system supports group attribute statements to easily map user privileges to all members of a specific group. When you configure the ExtraHop application on your identity provider, specify a group attribute name. This name is then entered in the Attribute Name field when you configure the identity provider on the ExtraHop system.



If your identity provider does not support group attribute statements, configure user attributes with the appropriate write, packets, and detections access privileges.

Configure SAML single sign-on with Okta

You can configure your ExtraHop system to enable users to log in to the system through the Okta identity management service.

Before you begin

  • You should be familiar with administering Okta. These procedures are based on the Okta Classic UI. If you are configuring Okta through the Developer Console, the procedure might be slightly different.
  • You should be familiar with administering ExtraHop systems.

These procedures require you to copy and paste information between the ExtraHop system and the Okta Classic UI, so it is helpful to have each system open side-by-side.

Enable SAML on the ExtraHop system
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Access Settings section, click Remote Authentication.
  3. From the Remote authentication method drop-down list, select SAML.
  4. Click Continue.
  5. Click View SP Metadata. You will need to copy the ACS URL and Entity ID to paste into the Okta configuration in the next procedure.
Configure SAML settings in Okta

This procedure requires you to copy and paste information between the ExtraHop Administration settings and the Okta Classic UI, so it is helpful to have each UI open side-by-side.

  1. Log in to Okta.
  2. In the upper-right corner of the page, change the view from Developer Console to Classic UI.
  3. From the top menu, click Applications.
  4. Click Add Application.
  5. Click Create New App.
  6. From the Platform drop-down list, select Web.
  7. For the Sign on method, select SAML 2.0.
  8. Click Create.
  9. In the General Settings section, type a unique name in the App name field to identify the ExtraHop system.
  10. (Optional): Configure the App logo and App visibility fields as required for your environment.
  11. Click Next.
  12. In the SAML Settings sections, paste the Assertion Consumer Service (ACS) URL from the ExtraHop system into the Single sign on URL field in Okta.
    Note:You might need to manually edit the ACS URL if the URL contains an unreachable hostname, such as the default system hostname extrahop. We recommend that you specify the fully qualified domain name for the ExtraHop system in the URL.
  13. Paste the SP Entity ID from the ExtraHop system into the Audience URI (SP Entity ID) field in Okta.
  14. From the Name ID format drop-down list, select Persistent.
  15. From the Application username drop-down list, select a username format.
  16. In the Attribute Statements section, add the following attributes. These attributes identify the user throughout the ExtraHop system.
    Name Name format Value
    urn:oid:0.9.2342.19200300.100.1.3 URI Reference user.email
    urn:oid:2.5.4.4 URI Reference user.lastName
    urn:oid:2.5.4.42 URI Reference user.firstName
  17. In the Group Attribute Statement section, type a string in the Name field and configure a filter. You will specify the group attribute name when you configure user privilege attributes on the ExtraHop system.
    The following figure shows a sample configuration.

  18. Click Next and then click Finish.
    You are returned to the Sign On settings page.
  19. In the Settings section, click View Setup Instructions.
    A new browser window opens and displays information that is required to configure the ExtraHop system.
Assign the ExtraHop system to Okta groups
We assume that you already have users and groups configured in Okta. If you do not, refer to the Okta documentation to add new users and groups.
  1. From the Directory menu, select Groups.
  2. Click the group name.
  3. Click Manage Apps.
  4. Locate the name of the application you configured for the ExtraHop system and click Assign.
  5. Click Done.
Add identity provider information on the ExtraHop system
  1. Return to the Administration settings on the ExtraHop system. Close the Service Provider metadata window if it is still open, and then click Add Identity Provider.
  2. Type a unique name in the Provider Name field. This name appears on the ExtraHop system login page.


  3. From Okta, copy the Identity Provider Single Sign-On URL and paste into the SSO URL field on the ExtraHop system.
  4. From Okta, copy the Identity Provider Issuer URL and paste into the Entity ID field on the ExtraHop system.
  5. From Okta, copy the X.509 certificate and paste into the Signing Certificate field on the ExtraHop system.
  6. Choose how you would like to provision users from one of the following options.
    • Select Auto-provision users to create a new remote SAML user account on the ExtraHop system when the user first logs in.
    • Clear the Auto-provision users checkbox and manually configure new remote users through the ExtraHop Administration settings or REST API. Access and privilege levels are determined by the user configuration in Okta.
  7. The Enable this identity provider option is selected by default and allows users to log in to the ExtraHop system. To prevent users from logging in, clear the checkbox.
  8. Configure user privilege attributes. You must configure the following set of user attributes before users can log in to the ExtraHop system through an identity provider. Values are user-definable; however, they must match the attribute names that are included in the SAML response from your identity provider. Values are not case sensitive and can include spaces. For more information about privilege levels, see Users and user groups.
    Important:You must specify the attribute name and configure at least one attribute value other than No access to enable users to log in.
    In the examples below, the Attribute Name field is the group attribute configured when creating the ExtraHop application on the identity provider and the Attribute Values are the names of your user groups. If a user is a member of more than one group, the user is granted the most permissive access privilege.
  9. (Optional): Configure packets and session key access. Configuring packets and session key attributes is optional and only required when you have a connected Trace appliance. Users with unlimited or cloud setup (Reveal(x) 360) privileges are automatically granted access to packets and session keys.
  10. (Optional): Configure detections access. Configuring detections attributes is optional and only required when the global privilege policy is set to Only specified users can view detections. Users with unlimited or cloud setup (Reveal(x) 360) privileges are automatically granted access to detections.
  11. Click Save.
  12. Save the Running Config.
Log in to the ExtraHop system
  1. Log in to the ExtraHop system through https://<extrahop-hostname-or-IP-address>.
  2. Click Log in with <provider name>.
  3. Sign in to your provider with your email address and password. You are automatically directed to the ExtraHop Overview page.

Configure SAML single sign-on with Google

You can configure your ExtraHop system to enable users to log in to the system through the Google identity management service.

Before you begin

  • You should be familiar with administering Google Admin.
  • You should be familiar with administering ExtraHop systems.

These procedures require you to copy and paste information between the ExtraHop system and Google Admin console, so it is helpful to have each system open side-by-side.

Enable SAML on the ExtraHop system
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Access Settings section, click Remote Authentication.
  3. From the Remote authentication method drop-down list, select SAML.
  4. Click Continue.
  5. Click View SP Metadata.
  6. Copy the ACS URL and Entity ID to a text file. You will paste this information into the Google configuration in a later procedure.
Add user custom attributes
  1. Log in to the Google Admin console.
  2. Click Users.
  3. Click the Manage custom attributes icon .
  4. Click Add Custom Attribute.
  5. In the Category field, type ExtraHop.
  6. (Optional): Type a description in the Description field.
  7. In the Custom fields section, enter the following information.
    1. In the Name field, type writelevel.
    2. From the Info Type drop-down list, select Text.
    3. From the Visibility drop-down list, select Visible to domain.
    4. From the No. of values drop-down list, select Single Value.
  8. (Optional): If you have connected Trace appliances, enable packet access by configuring a custom field with the following information.
    1. In the Name field, type packetslevel.
    2. From the Info Type drop-down list, select Text.
    3. From the Visibility drop-down list, select Visible to domain.
    4. From the No. of values drop-down list, select Single Value.
  9. (Optional): Enable detections access, by configuring a custom field with the following information.
    The detectionsaccesslevel attribute is only required when the global privilege policy is set to Only specified users can view detections.
    1. In the Name field, type detectionsaccesslevel.
    2. From the Info Type drop-down list, select Text.
    3. From the Visibility drop-down list, select Visible to domain.
    4. From the No. of values drop-down list, select Single Value.
  10. Click Add.
Add identity provider information from Google to the ExtraHop system
  1. In the Google Admin console, click the Main menu icon and select Apps > SAML apps.
  2. Click the Enable SSO for a SAML application icon .
  3. Click SETUP MY OWN CUSTOM APP.
  4. On the Google IdP Information screen, click the Download button to download the certificate (GoogleIDPCertificate.pem).
  5. Return to the Administration settings on the ExtraHop system.
  6. Click Add Identity Provider.
  7. Type a unique name in the Provider Name field. This name appears on the ExtraHop system login page.
  8. From the Google IdP Information screen, copy the SSO URL and paste it into the SSO URL field on the ExtraHop appliance.
  9. From the Google IdP Information screen, copy the Entity ID and paste into the Entity ID field on the ExtraHop system.
  10. Open the GoogleIDPCertificate in a text editor, copy the contents and paste into the Public Certificate field on the ExtraHop system.
  11. Choose how you would like to provision users from one of the following options.
    • Select Auto-provision users to create a new remote SAML user account on the ExtraHop system when the user first logs in.
    • Clear the Auto-provision users checkbox and manually configure new remote users through the ExtraHop Administration settings or REST API. Access and privilege levels are determined by the user configuration in Google.
  12. The Enable this identity provider option is selected by default and allows users to log in to the ExtraHop system. To prevent users from logging in, clear the checkbox.
  13. Configure user privilege attributes. You must configure the following set of user attributes before users can log in to the ExtraHop system through an identity provider. Values are user-definable; however, they must match the attribute names that are included in the SAML response from your identity provider. Values are not case sensitive and can include spaces. For more information about privilege levels, see Users and user groups..
    Important:You must specify the attribute name and configure at least one attribute value other than No access to enable users to log in.
    In the example below, the Attribute Name field is the application attribute and the Attribute Value is the user field name configured when creating the ExtraHop application on the identity provider.
    Field Name Example Attribute Value
    Attribute Name urn:extrahop:saml:2.0:writelevel
    No access none
    Unlimited privileges unlimited
    Full write privileges full_write
    Limited write privileges limited_write
    Personal write privileges personal_write
    Full read-only privileges full_readonly
    Restricted read-only privileges restricted_readonly
  14. (Optional): Configure packets and session key access. Configuring packets and session key attributes is optional and only required when you have a connected Trace appliance. Users with unlimited or cloud setup (Reveal(x) 360) privileges are automatically granted access to packets and session keys.
    Field Name Example Attribute Value
    Attribute Name urn:extrahop:saml:2.0:packetslevel
    No access none
    Packets and session keys full_with_keys
    Packets only full
  15. (Optional): Configure detections access. Configuring detections attributes is optional and only required when the global privilege policy is set to Only specified users can view detections. Users with unlimited or cloud setup (Reveal(x) 360) privileges are automatically granted access to detections.
    Field Example Attribute Value
    Attribute Name urn:extrahop:saml:2.0:detectionsaccesslevel
    No Access none
    Full access full
  16. Click Save.
  17. Save the Running Config.
Add ExtraHop service provider information to Google
  1. Return to the Google Admin console and click Next on the Google Idp Information page to continue to step 3 of 5.
  2. Type a unique name in the Application Name field to identify the ExtraHop system. Each ExtraHop system that you create a SAML application for needs a unique name.
  3. (Optional): Type a description for this application or upload a custom logo.
  4. Click Next.
  5. Copy the Assertion Consumer Service (ACS) URL from the ExtraHop system and paste into the ACS URL field in Google Admin.
    Note:You might need to manually edit the ACS URL if the URL contains an unreachable hostname, such as the default system hostname extrahop. We recommend that you specify the fully qualified domain name for the ExtraHop system in the URL.
  6. Copy the SP Entity ID from the ExtraHop system and paste into the Entity ID field in Google Admin.
  7. Select the Signed Response checkbox.
  8. In the Name ID section, leave the default Basic Information and Primary Email settings unchanged.
  9. From the Name ID Format drop-down list, select PERSISTENT.
  10. Click Next.
  11. On the Attribute Mapping screen, click ADD NEW MAPPING.
  12. Add the following attributes exactly as shown. The first four attributes are required. The packetslevel attribute is optional and is only required if you have a connected Trace appliance. If you have a Trace appliance and you do not configure the packetslevel attribute, users will be unable to view or download packet captures in the ExtraHop system.
    Application Attribute Category User Field
    urn:oid:0.9.2342.19200300.100.1.3 Basic Information Primary Email
    urn:oid:2.5.4.4 Basic Information Last Name
    urn:oid:2.5.4.42 Basic Information First Name
    urn:extrahop:saml:2.0:writelevel ExtraHop writelevel
    urn:extrahop:saml:2.0:packetslevel ExtraHop packetslevel
    urn:extrahop:saml:2.0:detectionsaccesslevel ExtraHop detectionslevel
  13. Click Finish and then click OK.
  14. Click Edit Service.
  15. Select On for everyone, and then click Save.
Assign user privileges
  1. Click Users to return to the table of all users in your organizational units.
  2. Click the name of the user you want to allow to log in to the ExtraHop system.
  3. In the User information section, click User details.
  4. In the ExtraHop section, click writelevel and type one of the following privilege levels.
    • unlimited
    • full_write
    • limited_write
    • personal_write
    • full_readonly
    • restricted_readonly
    • none
    For information about user privileges, see Users and user groups.
  5. (Optional): If you added the packetslevel attribute above, click packetslevel and type one of the following privileges.
    • full
    • full_with_write
    • none
  6. (Optional): If you added the detectionslevel attribute above, click detectionslevel and type one of the following privileges.
    • full
    • none
  7. Click Save.
Log in to the ExtraHop system
  1. Log in to the ExtraHop system through https://<extrahop-hostname-or-IP-address>.
  2. Click Log in with <provider name>.
  3. Sign in to your provider with your email address and password. You are automatically directed to the ExtraHop Overview page.

Configure remote authentication through RADIUS

The ExtraHop system supports Remote Authentication Dial In User Service (RADIUS) for remote authentication and local authorization only. For remote authentication, the ExtraHop system supports unencrypted RADIUS and plaintext formats.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Access Settings section, click Remote Authentication.
  3. From the Remote authentication method drop-down list, select RADIUS and then click Continue.
  4. On the Add RADIUS Server page, type the following information:
    Host
    The hostname or IP address of the RADIUS server. Make sure that the DNS of the ExtraHop system is properly configured if you specify a hostname.
    Secret
    The shared secret between the ExtraHop system and the RADIUS server. Contact your RADIUS administrator to obtain the shared secret.
    Timeout
    The amount of time in seconds that the ExtraHop system waits for a response from the RADIUS server before attempting the connection again.
  5. Click Add Server.
  6. (Optional): Add additional servers as needed.
  7. Click Save and Finish.
  8. From the Privilege assignment options drop-down list, choose one of the following options:
    • Remote users have full write access

      This option grants remote users full write access to the ExtraHop system. In addition, you can grant additional access for packet downloads, SSL session keys, and detections.

    • Remote users have full read-only access

      This option grants remote users read-only access to the ExtraHop system. In addition, you can grant additional access for packet downloads, SSL session keys, and detections.

    • Remote users can view connected appliances (Deprecated)

      This option, which only appears on the Command appliance, grants remote users log in access to the Administration page on the Command appliance to view any connected Discover, Explore, and Trace appliances. Note that this privilege is deprecated and will be unavailable in a future release.

  9. (Optional): Configure packet and session key access. Select one of the following options to allow remote users to download packet captures and SSL session keys.
    • No access
    • Packets only
    • Packets and session keys
  10. (Optional): Configure detections access. Select one of the following options to allow remote users to view detections. This setting is visible only when the global privilege policy for detections access control is set to Only specified users can view detections.
    • No access
    • Full access
  11. Click Save and Finish.
  12. Click Done.

Configure remote authentication through TACACS+

The ExtraHop system supports Terminal Access Controller Access-Control System Plus (TACACS+) for remote authentication and authorization.

Ensure that each user to be remotely authorized has the ExtraHop service configured on the TACACS+ server before beginning this procedure.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Access Settings section, click Remote Authentication.
  3. From the Remote authentication method drop-down list, select TACACS+, and then click Continue.
  4. On the Add TACACS+ Server page, type the following information:

    Host: The hostname or IP address of the TACACS+ server. Make sure that the DNS of the ExtraHop system is properly configured if you are entering a hostname.

    Secret: The shared secret between the ExtraHop system and the TACACS+ server. Contact your TACACS+ administrator to obtain the shared secret.

    Note:The secret cannot include the number sign (#).

    Timeout: The amount of time in seconds that the ExtraHop system waits for a response from the TACACS+ server before attempting to connect again.

  5. Click Add Server.
  6. (Optional): Add additional servers as needed.
  7. Click Save and Finish.
  8. From the Permission assignment options drop-down list, choose one of the following options:
    • Obtain privileges level from remote server

      This option allows remote users to obtain privilege levels from the remote server. You must also configure permissions on the TACACS+ server.

    • Remote users have full write access

      This option grants remote users full write access to the ExtraHop system. In addition, you can grant additional access for packet downloads, SSL session keys, and detections.

    • Remote users have full read-only access

      This option grants remote users read-only access to the ExtraHop system. In addition, you can grant additional access for packet downloads, SSL session keys, and detections.

    • Remote users can view connected appliances (Deprecated)

      This option, which only appears on the Command appliance, grants remote users log in access to the Administration page on the Command appliance to view any connected Discover, Explore, and Trace appliances. Note that this privilege is deprecated and will be unavailable in a future release.

  9. (Optional): Configure packet and session key access. Select one of the following options to allow remote users to download packet captures and SSL session keys.
    • No access
    • Packets only
    • Packets and session keys
  10. (Optional): Configure detections access. Select one of the following options to allow remote users to view detections. This setting is visible only when the global privilege policy for detections access control is set to Only specified users can view detections.
    • No access
    • Full access
  11. Click Save and Finish.
  12. Click Done.
Configure the TACACS+ server

In addition to configuring remote authentication on your ExtraHop system, you must configure your TACACS+ server with two attributes, one for the ExtraHop service and one for the permission level. If you have a Trace appliance, you can optionally add a third attribute for packet capture and session key logging.

  1. Log in to your TACACS+ server and navigate to the shell profile for your ExtraHop configuration.
  2. For the first attribute, add service.
  3. For the first value, add extrahop.
  4. For the second attribute, add the privilege level, such as readwrite.
  5. For the second value, add 1.
    For example, the following figure shows the extrahop attribute and a privilege level of readwrite.
    Here is a list of available permission attributes, values, and descriptions:
    • setup = 1, which allows the user to create and modify all objects and settings on the ExtraHop system, including Administration settings
    • readwrite = 1, which allows the user to create and modify all objects and settings on the ExtraHop system, not including Administration settings
    • limited = 1, which allows the user to create, modify, and share dashboards
    • readonly = 1, which allows the user to view objects in the ExtraHop system
    • personal = 1, which allows the user to create dashboards for themselves and modify any dashboards that have been shared with them
    • limited_metrics = 1, which allows the user to view shared dashboards
  6. (Optional): Add the following attribute to allow users to view, acknowledge, and hide detections that appear in the ExtraHop system.
    • detectionsaccessfull = 1
  7. (Optional): If you have a Trace appliance, add an attribute to allow users to download packet captures or packet captures with associated session keys.
    Here is a list of the available packet capture attributes and values:
    • packetsfull = 1, which allows users with any privilege level to view and download packets
    • packetsfullwithkeys = 1, which allows users with any privilege level to view and download packets and associated session keys stored on the Trace appliance

API Access

The API Access page enables you to generate, view, and manage access for the API keys that are required to perform operations through the ExtraHop REST API.

Manage API key access

Users with unlimited privileges can configure whether users can generate API keys for the ExtraHop system. You can allow only local users to generate keys, or you can also disable API key generation entirely.

Users must generate an API key before they can perform operations through the ExtraHop REST API. Keys can be viewed only by the user who generated the key or system administrators with unlimited privileges. After a user generates an API key, they must append the key to their request headers.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Access Settings section, click API Access.
  3. In the Manage API Access section, select one of the following options:
    • Allow all users to generate an API key: Local and remote users can generate API keys.
    • Only local users can generate an API key: Remote users cannot generate API keys.
    • No users can generate an API key: No API keys can be generated by any user.
  4. Click Save Settings.

Configure cross-origin resource sharing (CORS)

Cross-origin resource sharing (CORS) allows you to access the ExtraHop REST API across domain-boundaries and from specified web pages without requiring the request to travel through a proxy server.

You can configure one or more allowed origins or you can allow access to the ExtraHop REST API from any origin. Only administrative users with unlimited privileges can view and edit CORS settings.
  1. In the Access Settings section, click API Access.
  2. In the CORS Settings section, specify one of the following access configurations.
    • To add a specific URL, type an origin URL in the text box, and then click the plus (+) icon or press ENTER.

      The URL must include a scheme, such as HTTP or HTTPS, and the exact domain name. You cannot append a path; however, you can provide a port number.

    • To allow access from any URL, select the Allow API requests from any Origin checkbox.
      Note:Allowing REST API access from any origin is less secure than providing a list of explicit origins.
  3. Click Save Settings and then click Done.

Generate an API key

You must generate an API key before you can perform operations through the ExtraHop REST API. Keys can be viewed only by the user who generated the key or by system administrators with unlimited privileges. After you generate an API key, add the key to your request headers or the ExtraHop REST API Explorer.

Before you begin

Make sure the ExtraHop system is configured to allow API key generation.
  1. In the Access Settings section, click API Access.
  2. In the Generate an API Key section, type a description for the new key, and then click Generate.
  3. Scroll down to the API Keys section, and copy the API key that matches your description.
You can paste the key into the REST API Explorer or append the key to a request header.

Privilege levels

User privilege levels determine which ExtraHop system and administration tasks the user can perform through the ExtraHop REST API.

You can view the privilege levels for users through the granted_roles and effective_roles properties. The granted_roles property shows you which privilege levels are explicitly granted to the user. The effective_roles property shows you all privilege levels for a user, including those received outside of the granted role, such as through a user group.

The granted_roles and effective_roles properties are returned by the following operations:

  • GET /users
  • GET /users/{username}

The granted_roles and effective_roles properties support the following privilege levels. Note that the type of tasks for each ExtraHop system vary by the available resources listed in the REST API Explorer.

Privilege level Actions allowed
"system": "full"
  • Enable or disable API key generation for the ExtraHop system.
  • Generate an API key.
  • View the last four digits and description for any API key on the system.
  • Delete API keys for any user.
  • View and edit cross-origin resource sharing.
  • Transfer ownership of any non-system dashboard to another user.
  • Perform any administration task available through the REST API.
  • Perform any ExtraHop system task available through the REST API.
"write": "full"
  • Generate your own API key.
  • View or delete your own API key.
  • Change your own password, but you cannot perform any other administration tasks through the REST API.
  • Perform any ExtraHop system task available through the REST API.
"write": "limited"
  • Generate an API key.
  • View or delete their own API key.
  • Change your own password, but you cannot perform any other administration tasks through the REST API.
  • Perform all GET operations through the REST API.
  • Modify the sharing status of dashboards that you are allowed to edit.
  • Delete dashboards and activity maps that you own.
  • Perform metric and record queries.
"write": "personal"
  • Generate an API key.
  • View or delete your own API key.
  • Change your own password, but you cannot perform any other administration tasks through the REST API.
  • Perform all GET operations through the REST API.
  • Delete dashboards and activity maps that you own.
  • Perform metric and record queries.
"metrics": "full"
  • Generate an API key.
  • View or delete your own API key.
  • Change your own password, but you cannot perform any other administration tasks through the REST API.
  • View dashboards and activity maps shared with you.
  • Perform metric and record queries.
"metrics": "restricted"
  • Generate an API key.
  • View or delete your own API key.
  • Change your own password, but you cannot perform any other administration tasks through the REST API.
  • View dashboards and activity maps shared with you.
"packets": "full"
  • View and download packets from an ExtraHop system through the GET/packetcaptures/{id} operation.

This is an add-on privilege that can be granted to a user with one of the following privilege levels:

  • "write": "full"
  • "write": "limited"
  • "write": "personal"
  • "write": null
  • "metrics": "full"
  • "metrics": "restricted"
"packets": "full_with_keys"
  • View and download packets from an ExtraHop system through the GET/packetcaptures/{id} operation.

This is an add-on privilege that can be granted to a user with one of the following privilege levels:

  • "write": "full"
  • "write": "limited"
  • "write": "personal"
  • "write": null
  • "metrics": "full"
  • "metrics": "restricted"
"detections": "full"
  • View detections in the ExtraHop system.

This is an add-on privilege that can be granted to a user with one of the following privilege levels:

  • "write": "full"
  • "write": "limited"
  • "write": "personal"
  • "write": null
  • "metrics": "full"
  • "metrics": "restricted"
"detections": "none"
  • No access to detections.

This is an add-on privilege that can be granted to a user with one of the following privilege levels:

  • "write": "full"
  • "write": "limited"
  • "write": "personal"
  • "write": null
  • "metrics": "full"
  • "metrics": "restricted"

System Configuration

In the System Configuration section, you can modify the following settings.

Capture
Configure the network capture settings. (Discover appliance only)
Datastore
Configure an extended datastore or reset the local datastore. (Discover appliance only)
Inactive Sources
Remove devices and applications that have been inactive between 1 and 90 days from search results.
Investigation Tracking
Select whether to track detection investigations with the ExtraHop system or from an external ticketing system.
Geomap Data Source
Modify the information in geomaps.
Open Data Streams
Send log data to a third-party system, such as a syslog system, MongoDB database, or HTTP server. (Discover appliance only)
Trends
Reset all trends and trend-based alerts (Discover appliance only).
Backup and Restore
Create, view, or restore system backups.

Capture

The Capture page provides controls to adjust how the ExtraHop system collects your network traffic for analysis.

Exclude protocol modules

By default, all supported modules on the ExtraHop system are included in the capture unless you manually exclude them.

  1. Click System Configuration > Capture.
  2. Click Excluded Protocol Modules.
  3. Add Module to Exclude.
  4. On the Select Protocol Module to Exclude page, from the Module Name dropdown, select the module that you want to exclude from the capture.
  5. Click Add.
  6. On the Excluded Protocol Modules page, click Restart Capture.
  7. After the capture restarts, click OK.
To re-include the module, click the red X to delete it from the Current Excluded Modules list.

Exclude MAC addresses

Add filters to exclude specific MAC addresses or vendor device traffic from the network capture

  1. In the System Configuration section, click Capture.
  2. Click MAC Address Filters.
  3. Click Add Filter.
  4. In the MAC Address field, type the MAC address to exclude.
  5. In the Mask field, type the mask to indicate how many bits, from left to right, the filter checks against the MAC address.
  6. Click Add.
    In the following example, the full MAC address is excluded from the capture:

    MAC Address: 60:98:2D:B1:EC:42

    Mask: FF:FF:FF:FF:FF:FF

    In this example, only the first 24 bits are evaluated for exclusion:

    MAC Address: 60:98:2D:B1:EC:42

    Mask: FF:FF:FF:00:00:00

To re-include a MAC address, click Delete to remove the address from the list.

Exclude an IP address or range

Add filters to exclude specific IP addresses and IP ranges from the network capture on the ExtraHop system.

  1. Click System Configuration > Capture.
  2. Click IP Address Filters.
  3. Click Add Filter.
  4. On the IP Address Filters page, enter either a single IP address you want to exclude, or an IP address mask in CIDR format for a range of IP addresses you want to exclude.
  5. Click Add.
To re-include an IP address or range, click Delete next to the filter for each address.

Exclude a port

Add filters to exclude traffic from specific ports from the network capture on the ExtraHop system.

  1. In the System Configuration section,click Capture.
  2. Click Port Filters.
  3. Click Add Filter.
  4. On the Add Port Filter page, type the port you want to exclude.
    • To specify a source port you want to exclude, type the port number in the Source Port field.
    • To specify a destination port you want to exclude, type the port number in the Destination Port field.
  5. From the IP Protocol drop-down list, select the protocol you want to exclude on the indicated port.
  6. Click Add.
To re-include a port, click Delete next to the port.

Filtering and deduplication

Refer to the following table to view the effects of filtering and deduplication on metrics, packet capture, and device discovery. Deduplication is enabled by default on the system.

Packet Dropped by MAC address filter IP address filter Port filter L2 dedup L3 dedup
Network VLAN L2 Metrics Not collected Not collected Not fragmented*: Not collected

Fragmented: Collected

Not collected Collected
Network VLAN L3 Metrics Not collected Not collected Not fragmented: Not collected

Fragmented: Collected

Not collected Collected
Device L2/L3 Metrics Not collected Not collected Not fragmented: Not collected

Fragmented, top-level: Collected

Fragmented, detail: Not collected

Not collected Collected
Global PCAP Packets Captured Captured Captured Captured Captured
Precision PCAP Packets Not captured Not captured Not captured Not captured Captured
L2 Device Discovery No discovery Discovery Discovery -- --
L3 Device Discovery No discovery No discovery Not fragmented: No discovery

Fragmented: Discovery

-- --

*For port filters, when IP fragments are present in the data feed, a port number is not determined during fragment reassembly. The ExtraHop system might collect metrics, capture packets, or discover a device even if the port filtering rule otherwise precludes it.

L2 duplicates are identical Ethernet frames. The duplicate frames do not usually exist on the wire, but are an artifact of the data feed configuration. L3 duplicates are frames that differ only in L2 header and IP TTL. These frames usually result from tapping on both sides of a router. Because these frames exist on the monitored network, they are counted at L2 and L3 in the locations referenced above. L3 deduplication is targeted toward L4 and above, for example, to avoid counting the L3 duplicates as TCP retransmissions.

Pseudo devices

Pseudo devices are deprecated as of ExtraHop version 6.0. If you have upgraded your system from a previous version with this functionality, you still can access the configuration page to migrate existing pseudo devices to custom devices. By default, all IP addresses outside of locally-monitored broadcast domains are aggregated at an incoming router. To identify the devices behind these routers for reporting, you can create custom devices. Unlike with pseudo devices, you do not need full privileges to configure a custom device.

Note:Any pseudo devices created on a previous version of ExtraHop firmware will remain on your Discover appliance until you delete them.

Protocol classification

Protocol classification relies on specific payloads to identify custom protocols over specific ports. These protocols are Layer 7 (application-layer) protocols that sit above the Layer 4 (TCP or UDP) protocol. These applications have their own custom protocol, and they also use the TCP protocol.

The Protocol Classification page provides an interface to perform the following functions:

  • List applications and ports for the following network entities:
    • Widely-known applications that are mapped to non-standard ports.
    • Lesser-known and custom networking applications.
    • Unnamed applications with TCP and UDP traffic (for example, TCP 1234).
  • Add custom protocol-to-application mapping that includes the following information:
    Name
    The user-specified protocol name.
    Protocol
    The selected Layer 4 protocol (TCP or UDP).
    Source
    (Optional) The specified source port. Port 0 indicates any source port.
    Destination
    The destination port or range of ports.
    Loose Initiation
    Select this checkbox if you want the classifier to attempt to categorize the connection without seeing the connection open. ExtraHop recommends selecting loose initiation for long-lived flows.

    By default, the ExtraHop system uses loosely-initiated protocol classification, so it attempts to classify flows even after the connection was initiated. You can turn off loose initiation for ports that do not always carry the protocol traffic (for example, the wildcard port 0).

  • Delete protocols with the selected application name and port mapping from the list.

    The application name and port do not display in the ExtraHop system or in reports based on any future data capture. The device will appear in reports with historical data, if the device was active and discoverable within the reported time period.

  • Restart the network capture.
    • You must restart the network capture before any protocol classification changes take effect.
    • Previously-collected capture data is preserved.

The ExtraHop system recognizes most protocols on their standard ports with some exceptions. On the Performance edition, the following protocols are recognized on any port:

  • AJP
  • DTLS
  • FIX
  • HTTP
  • HTTP2
  • IIOP
  • Java RMI
  • LDAP
  • RPC
  • SSH
  • SSL

On Reveal(x) 360, the following protocols are recognized on any port:

  • ethminer
  • getblocktemplate
  • RDP
  • RFB
  • Stratum

In some cases, if a protocol is communicating over a non-standard port, it is necessary to add the non-standard port on the Protocol Classification page. In these cases, it is important to properly name the non-standard port. The table below lists the standard ports for each of the protocols, along with the protocol name that must be specified when adding the custom port numbers on the Protocol Classification page.

In most cases, the name you enter is the same as the name of the protocol. The most common exceptions to this rule are Oracle (where the protocol name is TNS) and Microsoft SQL (where the protocol name is TDS).

If you add a protocol name that has multiple destination ports, add the entire port range separated by a dash (-). For example, if your protocol requires adding ports 1434, 1467, and 1489 for database traffic, type 1434-1489 in the Destination Port field. Alternatively, add each of the three ports in three separate protocol classifications with the same name.

Canonical Name Protocol Name Transport Default Source Port Default Destination Port
ActiveMQ ActiveMQ TCP 0 61616
AJP AJP TCP 0 8009
CIFS CIFS TCP 0 139, 445
DB2 DB2 TCP 0 50000, 60000
DHCP DHCP TCP 68 67
Diameter AAA TCP 0 3868
DICOM DICOM TCP 0 3868
DNS DNS TCP, UDP 0 53
FIX FIX TCP 0 0
FTP FTP TCP 0 21
FTP-DATA FTP-DATA TCP 0 20
HL7 HL7 TCP, UDP 0 2575
HTTPS HTTPS TCP 0 443
IBM MQ IBMMQ TCP, UDP 0 1414
ICA ICA TCP 0 1494, 2598
IKE IKE UDP 0 500
IMAP IMAP TCP 0 143
IMAPS IMAPS TCP 0 993
Informix Informix TCP 0 1526, 1585
IPSEC IPSEC TCP, UDP 0 1293
IPX IPX TCP, UDP 0 213
IRC IRC TCP 0 6660-6669
ISAKMP ISAKMP UDP 0 500
iSCSI iSCSI TCP 0 3260
Kerberos Kerberos TCP, UDP 0 88
LDAP LDAP TCP 0 389, 390, 3268
LLDP LLDP Link Level N/A N/A
L2TP L2TP UDP 0 1701
Memcache Memcache TCP 0 11210, 11211
Modbus Modbus TCP 0 502
MongoDB MongoDB TCP 0 27017
MS SQL Server TDS TCP 0 1433
MSMQ MSMQ TCP 0 1801
MSRPC MSRPC TCP 0 135
MySQL MySQL TCP 0 3306
NetFlow NetFlow UDP 0 2055
NFS NFS TCP 0 2049
NFS NFS UDP 0 2049
NTP NTP UDP 0 123
OpenVPN OpenVPN UDP 0 1194
Oracle TNS TCP 0 1521
PCoIP PCoIP UDP 0 4172
POP3 POP3 TCP 0 143
POP3S POP3S TCP 0 995
PostgreSQL PostgreSQL TCP 0 5432
RADIUS AAA TCP 0 1812, 1813
RADIUS AAA UDP 0 1645, 1646, 1812, 1813
RDP RDP TCP 0 3389
Redis Redis TCP 0 6397
RFB RFB TCP 0 5900
SCCP SCCP TCP 0 2000
SIP SIP TCP 0 5060, 5061
SMPP SMPP TCP 0 2775
SMTP SMTP TCP 0 25
SNMP SNMP UDP 0 162
SSH SSH TCP 0 0
SSL SSL TCP 0 443
Sybase Sybase TCP 0 10200
SybaseIQ SybaseIQ TCP 0 2638
Syslog Syslog UDP 0 514
Telnet Telnet TCP 0 23
VNC VNC TCP 0 5900
WebSocket WebSocket TCP 0 80, 443

The name specified in the Protocol Name column in the table appears on the Protocol Classification page to classify a common protocol that communicates over non-standard ports.

Protocols in the ExtraHop system that do not appear in this table include the following:

HTTP
The ExtraHop system classifies HTTP on all ports.
HTTP-AMF
This protocol runs on top of HTTP and is automatically classified.

Protocols in this table that do not appear in the ExtraHop system include the following:

FTP-DATA
The ExtraHop system does not handle FTP-DATA on non-standard ports.
LLDP
This is a link-level protocol, so port-based classification does not apply.
Add a custom protocol classification

The following procedure describes how to add custom protocol classification labels with the TDS (MS SQL Server) protocol as an example.

By default, the ExtraHop system looks for TDS traffic on TCP port 1533. To add MS SQL Server TDS parsing on another port, complete the following steps.

  1. In the System Configuration section, click Capture.
  2. Click Protocol Classification.
  3. Click Add Protocol.
  4. On the Protocol Classification page, enter the following information:
    Name
    From the drop-down, select Add custom label....
    Name
    Enter TDS for the custom protocol name.
    Protocol
    From the drop-down, select an L4 protocol to associate with the custom protocol (TCP in this example).
    Source
    The source port for the custom protocol. (The default value of 0 specifies any source port.)
    Destination
    The destination port for the custom protocol. To specify a range of ports, put a hyphen between the first and last port in the range. For example, 3400-4400.
    Loose Initiation
    Select this checkbox if you want the classifier to attempt to categorize the connection without seeing the connection open. ExtraHop recommends selecting loose initiation for long-lived flows.

    By default, the ExtraHop system uses loosely-initiated protocol classification, so it attempts to classify flows even after the connection was initiated. You can turn off loose initiation for ports that do not always carry the protocol traffic (for example, the wildcard port 0).

  5. Click Add.
  6. Confirm the setting change, and then click Restart Capture for the change to take effect. This will briefly interrupt the collection of data.
  7. After the capture restarts, a confirmation message appears. Click Done.
  8. This change has been applied to the running config. When you save the change to the running config, it will be reapplied when the ExtraHop system restarts. Click View and Save Changes at the top of the screen.
  9. Click Save to write the change to the default configuration.
  10. After the configuration is saved, a confirmation message appears. Click Done.
Database statistics now appear for any devices running TDS on the added port (in this example, 65000). This setting is applied across the capture, so you do not need to add it on a per-device basis.

Configure Device Discovery

The ExtraHop system can discover and track devices by their MAC address (L2 Discovery) or by their IP addresses (L3 Discovery). L2 Discovery offers the advantage of tracking metrics for a device even if the IP address is changed or reassigned through a DHCP request. The system can also automatically discover VPN clients.

Before you begin

Learn how device discovery and L2 discovery works in the ExtraHop system. Changing these settings affects how metrics are associated with devices.
Note:Packet brokers can filter ARP requests. The ExtraHop system relies on ARP requests to associate L3 IP addresses with L2 MAC addresses.
Discover local devices

If you enable L3 Discovery, local devices are tracked by their IP address. The system creates an L2 parent entry for the MAC address and an L3 child entry for the IP address. Over time, if the IP address changes for a device, you might see a single entry for an L2 parent with a MAC address with multiple L3 child entries with different IP addresses.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click Device Discovery.
  4. In the Local Device Discovery section, select from the following choices:
    • Select the Enable local device discovery checkbox to enable L3 Discovery.
    • Clear the Enable local device discovery checkbox to enable L2 Discovery.
  5. Click Save.
Discover remote devices by IP address

You can configure the ExtraHop system to automatically discover devices on remote subnets by adding a range of IP addresses.

Note: If your ExtraHop system is configured for L2 Discovery and your remote devices request IP addresses through a DHCP relay agent, you can track devices by their MAC address, and you do not need to configure Remote L3 Discovery. Learn more about device discovery.
Important considerations about Remote L3 Discovery:
  • L2 information, such as device MAC address and L2 traffic, is not available if the device is on a different network from the one being monitored by the ExtraHop system. This information is not forwarded by routers, and therefore is not visible to the ExtraHop system.
  • Exercise caution when specifying CIDR notation. A /24 subnet prefix might result in 255 new devices discovered by the ExtraHop system. A wide /16 subnet prefix might result in 65,535 new devices discovered, which might exceed your device limit.
  • If an IP address is removed from the Remote L3 Device Discovery settings, the IP address will persist in the ExtraHop system as a remote L3 device as long as there are existing active flows for that IP address or until the capture is restarted. After a restart, the device is listed as an inactive remote L3 device.

    If the same IP address is later added through the local data feed, that remote L3 device can transition to a local L3 device, but only if the capture process is restarted and the Local Device Discovery setting is enabled.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click Device Discovery.
  4. In the Remote Device Discovery section, type the IP address in the IP address ranges field. You can specify one IP address or a CIDR notation, such as 192.168.0.0/24 for an IPv4 network or 2001:db8::/32 for an IPv6 network.
    Important:Every actively communicating remote IP address that matches the CIDR block will be discovered as a single device in the ExtraHop system. Specifying wide subnet prefixes such as /16 might result in thousands of discovered devices, which might exceed your device limit.
  5. Click the green plus icon (+) to add the IP address. You can add another IP address or range of IP addresses by repeating steps 5-6.
Important:The capture process must be restarted when removing IP address ranges before the changes take effect. We recommend deleting all entries before restarting the capture process. The capture process does not need to be restarted when adding IP address ranges.
Discover VPN clients

Enable the discovery of internal IP addresses that are associated with VPN client devices.

On new ExtraHop systems, VPN client discovery is enabled by default. On upgraded systems, VPN client discovery is disabled by default.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click Device Discovery.
  4. In the VPN Client Discovery section, select from the following choices:
    • Select the Enable VPN client discovery checkbox to enable VPN client discovery.
    • Clear the Enable VPN client discovery checkbox to disable VPN client discovery.
  5. Click Save.

SSL decryption

The ExtraHop system supports real-time decryption of SSL traffic for analysis. Before the system can decrypt your traffic, you must configure session key forwarding or upload an SSL server certificate and private key. The server certificate and private keys are uploaded over an HTTPS connection from a web browser to the ExtraHop system.

Note:Your server traffic must be encrypted through one of these supported cipher suites.
Help on this page
Note:SSL decryption requires a license. However, if you have a license for MS SQL, you can also upload an SSL certificate to decrypt MS SQL traffic from these settings.
Upload a PEM certificate and RSA private key
Tip:You can export a password-protected key to add to your ExtraHop system by running the following command on a program such as OpenSSL:
openssl rsa -in yourcert.pem -out new.key
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Decryption.
  4. In the Private Key Decryption section, select the checkbox for Require Private Keys.
  5. Click Save.
  6. In the Private Keys section, click Add Keys.
  7. In the Add PEM Certificate and RSA Private Key section, enter the following information:
    Name
    A descriptive name to identify this certificate and key.
    Enabled
    Clear this checkbox if you want to disable this SSL certificate.
    Certificate
    The public key certificate.
    Private Key
    The RSA private key.
  8. Click Add.

Next steps

Add the encrypted protocols you want to decrypt with this certificate.
Upload a PKCS#12/PFX file

PKCS#12/PFX files are archived in a secure container on the ExtraHop system and contains both public and private key pairs, which can only be accessed with a password.

Tip:To export private keys from a Java KeyStore to a PKCS#12 file, run the following command on your server, where javakeystore.jks is the path of your Java KeyStore:
keytool -importkeystore -srckeystore javakeystore.jks -destkeystore 
pkcs.p12 -srcstoretype jks -deststoretype pkcs12
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Decryption.
  4. In the Private Key Decryption section, select the checkbox for Require Private Keys.
  5. Click Save.
  6. In the Private Keys section, click Add Keys.
  7. In the Add PKCS#12/PFX File With Password section, enter the following information:
    Description
    A descriptive name to identify this certificate and key.
    Enabled
    Clear this checkbox to disable this SSL certificate.
  8. Next to PKCS#12/PFX file, click Choose File.
  9. Browse to the file and select it, then click Open.
  10. In the Password field, type the password for the PKCS#13/PFX file.
  11. Click Add.
  12. Click OK.

Next steps

Add the encrypted protocols you want to decrypt with this certificate.
Add encrypted protocols

You must add each protocol that you want to decrypt for each uploaded certificate.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Decryption.
  4. In the Protocol to Port Mapping by Key section, click Add Protocol.
  5. On the Add Encrypted Protocol page, enter the following information:
    Protocol
    From the drop-down list, select the protocol you want to decrypt.
    Key
    From the drop-down list, select an uploaded private key.
    Port
    Type the source port for the protocol. By default this value is set to 443, which specifies HTTP traffic. Specify 0 to decrypt all protocol traffic.
  6. Click Add.
Add a global port to protocol mapping

Add each protocol for the traffic that you want to decrypt with your session key forwarders.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Decryption.
  4. In the Private Key Decryption section, clear the Require Private Keys checkbox.
  5. In the Global Protocol to Port Mapping section, click Add Global Protocol.
  6. From the Protocol drop-down list, select the protocol for the traffic that you want to decrypt.
  7. In the Port field, type the number of the port. Type 0 to add all ports.
  8. Click Add.
Install the ExtraHop session key forwarder on a Windows server

Perfect Forward Secrecy (PFS) is a property of secure communication protocols that enables short-term, completely private session key exchanges between clients and servers. ExtraHop offers session key forwarding software that can send session keys to the ExtraHop system for SSL/TLS decryption. There is no limit to the number of session keys that the ExtraHop system can receive.

You must configure the ExtraHop system for session key forwarding and then install the forwarder software on the Windows and Linux servers that have the SSL/TLS traffic that you want to decrypt.

Before you begin
  • Read about SSL/TLS decryption and review the list of supported cipher suites.
  • Make sure that the ExtraHop system is licensed for SSL Decryption and SSL Shared Secrets.
  • Make sure that your server environment is supported by the ExtraHop session key forwarder software:
    • Microsoft Secure Channel (Schannel) security package
    • Java SSL/TLS (Java versions 8 through 13). Do not upgrade to this version of the session key forwarder if you are currently monitoring Java 6 or Java 7 environments. Version 7.9 of the session key forwarder supports Java 6 and Java 7, and is compatible with the latest ExtraHop firmware.
    • Dynamically linked OpenSSL (1.0.x and 1.1.x) libraries. OpenSSL is only supported on Linux systems with kernel versions 4.4 and later and RHEL 7.6 and later.
  • Make sure the server where you install the session key forwarder trusts the SSL certificate of the ExtraHop sensor.
Important:The ExtraHop system cannot decrypt TLS-encrypted TDS traffic through session key forwarding. Instead, you can upload an RSA private key.
  • Install the session key forwarder on one or more Windows 2008 R2, Windows 2012 R2, or Windows 2016 servers running SSL-based services with the native Windows SSL framework. OpenSSL on Windows is not currently supported.
Important:After you install the session key forwarder software on Windows 2012 R2 or Windows 2016 systems, applications that include SSL-enabled features, such as Microsoft Edge and Windows Store applications that incorporate sandboxing features, might fail to function correctly.

Validate the compatibility of the session key forwarder in your Windows test environment before deploying in your production environment.

Windows application traffic decryption

The following Microsoft application traffic can be decrypted with the session key forwarder.

  • Microsoft IIS
  • Microsoft PowerShell
  • Microsoft SQL Server
Install the software with the installation wizard
Warning:The installation requires a restart of the server. Do not start the installation unless you are able to restart the server after the installation completes.
  1. Log in to the Windows server.
  2. Download the latest version of the session key forwarder software.
  3. Double-click the ExtraHopSessionKeyForwarder.msi file and click Next.
  4. Select the box to accept the terms of the license agreement and then click Next.
  5. Type the name of the Discover appliance where you want to forward session keys.
  6. Accept the default TCP listen port value of 598 (recommended), or type a custom port value and then click Next.
  7. Click Install.
  8. When the installation completes, click Finish, and then click Yes to reboot the server.
Command-line installation option

The following steps show you how to install the session key forwarder from a Windows command prompt or Windows PowerShell.

Warning:The installation requires a restart of the server. Do not start the installation unless you are able to restart the server after the installation completes.
  1. Log in to the Windows server.
  2. Download the latest version of the session key forwarder software.
  3. Run the following command:
    msiexec /i C:\ExtraHopSessionKeyForwarder.msi EDA_HOSTNAME=<hostname or IP address of Discover appliance>

    Where C:\ExtraHopSessionKeyForwarder.msi is the path to the installer file.

    If required for your configuration, you can add optional parameters to the command:

    msiexec /i C:\ExtraHopSessionKeyForwarder.msi EDA_HOSTNAME=<hostname or IP address of Discover appliance> 
    EDACERTIFICATEPATH=<path to .pem file> SERVERNAMEOVERRIDE=<Common Name> TCPLISTENPORT=<Port Number>

    For more information, see Installation parameters in the Appendix.

  4. When the installation completes, click Yes to reboot the server.
Enable the SSL session key receiver service

You must enable the session key receiver service on the ExtraHop system before the system can receive and decrypt session keys from the session key forwarder. By default, this service is disabled.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Appliance Settings section, click Services.
  3. Select the SSL Session Key Receiver checkbox.
  4. Click Save.
Add a global port to protocol mapping

Add each protocol for the traffic that you want to decrypt with your session key forwarders.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Decryption.
  4. In the Private Key Decryption section, clear the Require Private Keys checkbox.
  5. In the Global Protocol to Port Mapping section, click Add Global Protocol.
  6. From the Protocol drop-down list, select the protocol for the traffic that you want to decrypt.
  7. In the Port field, type the number of the port. Type 0 to add all ports.
  8. Click Add.
View connected session key forwarders

You can view recently connected session key forwarders after you install the session key forwarder on your server and enable the SSL session key receiver service on the ExtraHop system. Note that this page only displays session key forwarders that have connected over the last few minutes, not all session key forwarders that are currently connected.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Shared Secrets.
Validate session key forwarding

Perform these steps to make sure that the installation was successful and the session key forwarder is forwarding the keys to the ExtraHop system.

  1. Log in to the Windows server.
  2. Open the Services MMC snap-in. Ensure both services, "ExtraHop Session Key Forwarder" and ExtraHop Registry Service" show the status as "Running".

  3. If either service is not running, troubleshoot the issue by completing the following steps.
    1. Open the Event Viewer MMC snap-in and navigate to Windows Logs > Application.
    2. Locate the most recent entries for the ExtraHopAgent source. Common reasons for failure and their associated error messages are listed in the Troubleshoot common error messages section below.
  4. If the Services and Event Viewer snap-in do not indicate any issues, apply a workload to the monitored services and go to the ExtraHop system to verify that secret-based decryption is working.
When the ExtraHop system receives session keys and applies them to decrypted sessions, the Shared Secret metric counter (in Applications > All Activity > SSL Sessions Decrypted) is incremented. Create a dashboard chart with this metric to see if the Discover appliance is successfully receiving session keys from the monitored servers.

Verify the configuration from the command line

In cases where you might have problems with the configuration, the session key forwarder binary includes a test mode you can access from the command line to test your configuration.

  1. Log in to your Windows server.
  2. Open the Windows PowerShell application.
  3. Perform a verification test by running the following command:
    & 'C:\Program Files\ExtraHop\extrahop-agent.exe' -t -server <eda hostname>

    Where <eda hostname> is the fully qualified domain name of the sensor you are forwarding secrets to.

    The following output should appear:

    <timestamp> Performing connectivity test
    <timestamp> No connectivity issues detected

    If there is a configuration issue, troubleshooting tips appear in the output to help you correct the issue. Follow the suggestions to resolve the issue and then run the test again.

  4. You can optionally test the certificate path and server name override by adding the following options to the command above.
    • Specify this option to test the certificate without adding it to the certificate store.

      -cert <file path to certificate>
    • Specify this option to test the connection if there is a mismatch between the ExtraHop system hostname that the forwarder knows (SERVER) and the common name (CN) that is presented in the SSL certificate of the ExtraHop system.

      -server-name-override <common name>
Key receiver system health metrics

The ExtraHop system provides key receiver metrics that you can add to a dashboard chart to monitor key receiver health and functionality.

To view a list of available metrics, click the System Settings icon and then click Metric Catalog. Type key receiver in the filter field to display all available key receiver metrics.

Tip:To learn how to create a new dashboard chart, see Edit a chart with the Metric Explorer.
Integrate the forwarder with the Java-based SSL application
The ExtraHop session key forwarder integrates with Java applications through the -javaagent option. Consult your application's specific instructions for modifying the Java runtime environment to include the -javaagent option.

As an example, Apache Tomcat supports customization of Java options in the Tomcat service manager properties. In the following example, adding the -javaagent option to the Java Options section causes the Java runtime to share SSL session secrets with the key forwarder process, which then relays the secrets to the ExtraHop system so that the secrets can be decrypted.

-javaagent:C:\Program Files\ExtraHop\exagent.jar


Troubleshoot common error messages

The following table shows common error messages that you can troubleshoot. If you see a different error or the proposed solution does not resolve your issue, contact ExtraHop Support.

Message Cause Solution
connect: dial tcp <IP address>:4873: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond The monitored server cannot route any traffic to the Discover appliance. Ensure firewall rules allow connections to be initiated by the monitored server to TCP port 4873 on the Discover appliance.
connect: dial tcp <IP address>:4873: connectex: No connection could be made because the target machine actively refused it The monitored server can route traffic to the Discover appliance, but the receiving process is not listening. Ensure that the Discover appliance is licensed for both the SSL Decryption and SSL Shared Secrets features.
connect: x509: certificate signed by unknown authority The monitored server is not able to chain up the Discover appliance certificate to a trusted Certificate Authority (CA). Ensure that the Windows certificate store for the computer account has trusted root certificate authorities that establish a chain of trust for the Discover appliance.
connect: x509: cannot validate certificate for <IP address> because it doesn't contain any IP SANs An IP address was supplied as the EDA_HOSTNAME parameter when installing the forwarder, but the SSL certificate presented by the Discover appliance does not include an IP address as a Subject Alternate Name (SAN). Select from the following three solutions.
  • If there is a hostname that the server can connect to the Discover appliance with, and that hostname matches the subject name in the Discover appliance certificate, uninstall and reinstall the forwarder, specifying that hostname as the value of EDA_HOSTNAME.
  • If the server is required to connect to the Discover appliance by IP address, uninstall and reinstall the forwarder, specifying the subject name from the Discover appliance certificate as the value of SERVERNAMEOVERRIDE.
  • Re-issue the Discover appliance certificate to include an IP Subject Alternative Name (SAN) for the given IP address.
Uninstall the software

If you no longer want the ExtraHop session key forwarder software installed, or if any of the original installation parameters have changed (Discover appliance hostname or certificate) and you need to reinstall the software with new parameters, do the following:

Important:You must restart the server for the configuration changes to take effect.
  1. Log in to the Windows server.
  2. (Optional): If you integrated the session key forwarder with Apache Tomcat, remove the -javaagent:C:\Program Files\ExtraHop\exagent.jar entry from Tomcat to prevent the web service from stopping.
  3. Choose one of the following options to remove the software:
    • Open the Control Panel and click Uninstall a program. Select ExtraHop Session Key Forwarder from the list and then click Uninstall.
    • Run the following command to remove the software and associated registry entries:
      msiexec /x C:\ExtraHopSessionKeyForwarder.msi

      Where C:\ExtraHopSessionKeyForwarder.msi is the path to the installer file.

  4. Click Yes to confirm.
  5. After the software is removed, click Yes to restart the system
Installation parameters

The session key forwarder software is provided as an MSI package. A complete installation of the forwarder requires specifying the EDA_HOSTNAME parameter. Three additional parameters, EDA_CERTIFICATEPATH, SERVERNAMEOVERRIDE, or TCPLISTENPORT might be required and are described in the tables below.

MSI Installation Parameter EDA_HOSTNAME
Registry Entry HKEY_LOCAL_MACHINE\SOFTWARE\ExtraHop\EDAHost
Description The Discover appliance hostname or IP address where SSL session keys will be sent.

This parameter is required.

MSI Installation Parameter EDA_CERTIFICATEPATH
Registry Entry N/A
Description

The monitored server must trust the issuer of the Discover appliance SSL certificate through the server's certificate store.

In some environments, the Discover appliance works with the self-signed certificate that the ExtraHop firmware generates upon installation. In this case, the certificate must be added to the certificate store. The EDA_CERTIFICATEPATH parameter enables a file-based PEM-encoded certificate to be imported into the Windows certificate store at installation.

If the parameter is not specified at installation and a self-signed or other CA certificate must be placed into the certificate store manually, the administrator must import the certificate to Certificates (Computer Account) > Trusted Root Certification Authorities on the monitored system.

This parameter is optional if the monitored server was previously configured to trust the SSL certificate of the Discover appliance through the Windows certificate store.

MSI Installation Parameter SERVERNAMEOVERRIDE
Registry Entry HKEY_LOCAL_MACHINE\SOFTWARE\ExtraHop\ServerNameOverride
Description

If there is a mismatch between the Discover appliance hostname that the forwarder knows (EDA_HOSTNAME) and the common name (CN) that is presented in the SSL certificate of the Discover appliance, then the forwarder must be configured with the correct CN.

This parameter is optional.

We recommend that you regenerate the SSL self-signed certificate based on the hostname from the SSL Certificate section of the Administration settings instead of specifying this parameter.
MSI Installation Parameter SET_REBOOT_PENDING="0"
Registry Entry N/A
Description A system restart is required for the install to complete. If you specify this parameter you will not be prompted to restart the system.

This parameter is not recommended.

MSI Installation Parameter TCPLISTENPORT
Registry Entry HKEY_LOCAL_MACHINE\SOFTWARE\ExtraHop\TCPListenPort
Description The key forwarder receives session keys locally from the Java environment through a TCP listener on localhost (127.0.0.1) and the port specified in the TCPListenPort entry. We recommended that this port remain set to the default of 598.

This parameter is optional.

Supported SSL/TLS cipher suites

The ExtraHop system can decrypt SSL/TLS traffic that has been encrypted with PFS or RSA cipher suites. All supported cipher suites can be decrypted by installing the session key forwarder on a server and configuring the ExtraHop system.

Cipher suites for RSA can also decrypt the traffic with a certificate and private key—with or without session key forwarding.

Decryption methods
The table below provides a list of cipher suites that the ExtraHop system can decrypt along with the supported decryption options.
  • PFS + GPP: the ExtraHop system can decrypt these cipher suites with session key forwarding and global protocol to port mapping
  • PFS + Cert: the ExtraHop system can decrypt these cipher suites with the session key forwarding and the certificate and private key
  • RSA + Cert: the ExtraHop system can decrypt these cipher suites without session key forwarding as long as you have uploaded the certificate and private key.
Hex Value Name (IANA) Name (OpenSSL) Supported Decryption
0x04 TLS_RSA_WITH_RC4_128_MD5 RC4-MD5 PFS + GPP PFS + Cert RSA + Cert
0x05 TLS_RSA_WITH_RC4_128_SHA RC4-SHA PFS + GPP PFS + Cert RSA + Cert
0x0A TLS_RSA_WITH_3DES_EDE_CBC_SHA DES-CBC3-SHA PFS + GPP PFS + Cert RSA + Cert
0x16 TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA EDH-RSA-DES-CBC3-SHA PFS + GPP PFS + Cert
0x2F TLS_RSA_WITH_AES_128_CBC_SHA AES128-SHA PFS + GPP PFS + Cert RSA + Cert
0x33 TLS_DHE_RSA_WITH_AES_128_CBC_SHA DHE-RSA-AES128-SHA PFS + GPP PFS + Cert
0x35 TLS_RSA_WITH_AES_256_CBC_SHA AES256-SHA PFS + GPP PFS + Cert RSA + Cert
0x39 TLS_DHE_RSA_WITH_AES_256_CBC_SHA DHE-RSA-AES256-SHA PFS + GPP PFS + Cert
0x3C TLS_RSA_WITH_AES_128_CBC_SHA256 AES128-SHA256 PFS + GPP PFS + Cert RSA + Cert
0x3D TLS_RSA_WITH_AES_256_CBC_SHA256 AES256-SHA256 PFS + GPP PFS + Cert RSA + Cert
0x67 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 DHE-RSA-AES128-SHA256 PFS + GPP PFS + Cert
0x6B TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 DHE-RSA-AES256-SHA256 PFS + GPP PFS + Cert
0x9C TLS_RSA_WITH_AES_128_GCM_SHA256 AES128-GCM-SHA256 PFS + GPP PFS + Cert RSA + Cert
0x9D TLS_RSA_WITH_AES_256_GCM_SHA384 AES256-GCM-SHA384 PFS + GPP PFS + Cert RSA + Cert
0x9E TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 DHE-RSA-AES128-GCM-SHA256 PFS + GPP PFS + Cert
0x9F TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 DHE-RSA-AES256-GCM-SHA384 PFS + GPP PFS + Cert
0x1301 TLS_AES_128_GCM_SHA256 TLS_AES_128_GCM_SHA256 PFS + GPP PFS + Cert
0x1302 TLS_AES_256_GCM_SHA384 TLS_AES_256_GCM_SHA384 PFS + GPP PFS + Cert
0x1303 TLS_CHACHA20_POLY1305_SHA256 TLS_CHACHA20_POLY1305_SHA256 PFS + GPP PFS + Cert
0xC007 TLS_ECDHE_ECDSA_WITH_RC4_128_SHA ECDHE-ECDSA-RC4-SHA PFS + GPP
0xC008 TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA ECDHE-ECDSA-DES-CBC3-SHA PFS + GPP
0xC009 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA ECDHE-ECDSA-AES128-SHA PFS + GPP
0xC00A TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA ECDHE-ECDSA-AES256-SHA PFS + GPP
0xC011 TLS_ECDHE_RSA_WITH_RC4_128_SHA ECDHE-RSA-RC4-SHA PFS + GPP PFS + Cert
0xC012 TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA ECDHE-RSA-DES-CBC3-SHA PFS + GPP PFS + Cert
0xC013 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDHE-RSA-AES128-SHA PFS + GPP PFS + Cert
0xC014 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA ECDHE-RSA-AES256-SHA PFS + GPP PFS + Cert
0xC023 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 ECDHE-ECDSA-AES128-SHA256 PFS + GPP
0xC024 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 ECDHE-ECDSA-AES256-SHA384 PFS + GPP
0xC027 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 ECDHE-RSA-AES128-SHA256 PFS + GPP PFS + Cert
0xC028 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDHE-RSA-AES256-SHA384 PFS + GPP PFS + Cert
0xC02B TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDHE-ECDSA-AES128-GCM-SHA256 PFS + GPP
0xC02C TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 ECDHE-ECDSA-AES256-GCM-SHA384 PFS + GPP
0xC02F TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDHE-RSA-AES128-GCM-SHA256 PFS + GPP PFS + Cert
0xC030 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDHE-RSA-AES256-GCM-SHA384 PFS + GPP PFS + Cert
0xCCA8 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 ECDHE-RSA-CHACHA20-POLY1305 PFS + GPP PFS + Cert
0xCCA9 TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 ECDHE-ECDSA-CHACHA20-POLY1305 PFS + GPP
0xCCAA TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 DHE-RSA-CHACHA20-POLY1305 PFS + GPP PFS + Cert
Install the ExtraHop session key forwarder on a Linux server

Perfect Forward Secrecy (PFS) is a property of secure communication protocols that enables short-term, completely private session key exchanges between clients and servers. ExtraHop offers session key forwarding software that can send session keys to the ExtraHop system for SSL/TLS decryption. There is no limit to the number of session keys that the ExtraHop system can receive.

You must configure the ExtraHop system for session key forwarding and then install the forwarder software on the Windows and Linux servers that have the SSL/TLS traffic that you want to decrypt.

Before you begin
  • Read about SSL/TLS decryption and review the list of supported cipher suites.
  • Make sure that the ExtraHop system is licensed for SSL Decryption and SSL Shared Secrets.
  • Make sure that your server environment is supported by the ExtraHop session key forwarder software:
    • Microsoft Secure Channel (Schannel) security package
    • Java SSL/TLS (Java versions 8 through 13). Do not upgrade to this version of the session key forwarder if you are currently monitoring Java 6 or Java 7 environments. Version 7.9 of the session key forwarder supports Java 6 and Java 7, and is compatible with the latest ExtraHop firmware.
    • Dynamically linked OpenSSL (1.0.x and 1.1.x) libraries. OpenSSL is only supported on Linux systems with kernel versions 4.4 and later and RHEL 7.6 and later.
  • Make sure the server where you install the session key forwarder trusts the SSL certificate of the ExtraHop sensor.
Important:The ExtraHop system cannot decrypt TLS-encrypted TDS traffic through session key forwarding. Instead, you can upload an RSA private key.
  • Install the session key forwarder on RHEL, CentOS, Fedora, or Debian-Ubuntu Linux distributions. The session key forwarder might not function correctly on other distributions.
  • The session key forwarder has not been extensively tested with SELinux and might not be compatible when enabled on some Linux distributions.
Enable the SSL session key receiver service

You must enable the session key receiver service on the ExtraHop system before the system can receive and decrypt session keys from the session key forwarder. By default, this service is disabled.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Appliance Settings section, click Services.
  3. Select the SSL Session Key Receiver checkbox.
  4. Click Save.
Add a global port to protocol mapping

Add each protocol for the traffic that you want to decrypt with your session key forwarders.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Decryption.
  4. In the Private Key Decryption section, clear the Require Private Keys checkbox.
  5. In the Global Protocol to Port Mapping section, click Add Global Protocol.
  6. From the Protocol drop-down list, select the protocol for the traffic that you want to decrypt.
  7. In the Port field, type the number of the port. Type 0 to add all ports.
  8. Click Add.
Install the software
RPM-based distributions
Tip:You can install the forwarder without user interaction by specifying environment variables in the installation command.
  1. Log in to your RPM-based Linux server.
  2. Download the latest version of the ExtraHop session key forwarder software.
  3. Open a terminal application and run the following command:
    sudo rpm --install <path to installer file>
  4. Open the initialization script in a text editor (vi or vim, for example).
    sudo vi /opt/extrahop/etc/extrahop-key-forwarder.conf
  5. Depending on how your sensors are managed, choose one of the following options:
    • For self-managed sensors, remove the hash symbol (#) before the EDA_HOSTNAME field and type the fully qualified domain name of your sensor, similar to the following example.
      EDA_HOSTNAME=discover.example.com
    • For ExtraHop-manged sensors, remove the hash symbol (#) before the EDA_HOSTED_PLATFORM field and type aws, similar to the following example.
      EDA_HOSTED_PLATFORM=aws
  6. (Optional): The key forwarder receives session keys locally from the Java environment through a TCP listener on localhost (127.0.0.1) and the port specified in the LOCAL_LISTENER_PORT field. We recommended that this port remain set to the default of 598. If you change the port number, you must modify the -javaagent argument to account for the new port.
  7. (Optional): If you prefer that syslog writes to a different facility than local3 for key forwarder log messages, you can edit the SYSLOG field.
    For a self-managed sensor, the contents of the extrahop-key-forwarder.conf file should appear similar to the following example:
    #EDA_HOSTED_PLATFORM=aws
    EDA_HOSTNAME=sensor.example.com
    LOCAL_LISTENER_PORT=598
    SYSLOG=local3
    ADDITIONAL_ARGS=''
    
  8. Save the file and exit the text editor.
  9. Start the extrahop-key-forwarder service:
    sudo service extrahop-key-forwarder start
Debian-Ubuntu distributions
Tip:You can install the forwarder without user interaction by specifying environment variables in the installation command.
  1. Log in to your Debian or Ubuntu Linux server.
  2. Download the latest version of the ExtraHop session key forwarder software.
  3. Open a terminal application and run the following command.
    sudo dpkg --install <path to installer file>
  4. Depending on how your sensors are managed, choose one of the following options:
      1. For self-managed sensors, select direct and then press ENTER.
      2. Type the fully qualified domain name or IP address of the ExtraHop system where session keys will be forwarded and then press ENTER.
    • For ExtraHop managed sensors, select hosted and then press ENTER.
    Tip:You can configure optional parameters LOCAL_LISTENER_PORT, SYSLOG, and ADDITIONAL_ARGS by editing the /opt/extrahop/etc/extrahop-key-forwarder.conf file.
  5. Ensure that the extrahop-key-forwarder service started:
    sudo service extrahop-key-forwarder status
    The following output should appear:
    extrahop-key-forwarder.service - LSB: ExtraHop Session Key Forwarder
    Loaded: loaded (/etc/rc.d/init.d/extrahop-key-forwarder; bad; vendor preset: disabled)
    Active: active (running) since Tue 2018-04-10 10:55:47 PDT; 5s ago
    If the service is not active, run the following command:
    sudo service extrahop-key-forwarder start
Integrate the forwarder with the Java-based SSL application
The ExtraHop session key forwarder integrates with Java applications through the -javaagent option. Consult your application's specific instructions for modifying the Java runtime environment to include the -javaagent option.

As an example, many Tomcat environments support customization of Java options in the /etc/default/tomcat7 file. In the following example, adding the -javaagent option to the JAVA_OPTS line causes the Java runtime to share SSL session secrets with the key forwarder process, which then relays the secrets to the ExtraHop system so that the secrets can be decrypted.

JAVA_OPTS="... -javaagent:/opt/extrahop/lib/exagent.jar
Validate and troubleshoot your installation

If your Linux server has network access to the ExtraHop system and the server SSL configuration trusts the certificate presented by the ExtraHop system that you specified when you installed the session key forwarder, then the configuration is complete.

In cases where you might have problems with the configuration, the session key forwarder binary includes a test mode you can access from the command-line to test your configuration.

  1. Log in to your Linux server.
  2. To validate your installation, perform an initial test by running the following command:
    /opt/extrahop/sbin/extrahop-agent -t=true -server <eda hostname>

    The following output should appear:

    <timestamp> Performing connectivity test
    <timestamp> No connectivity issues detected

    If there is a configuration issue, troubleshooting tips appear in the output to help you correct the issue. Follow the suggestions to resolve the issue and then run the test again.

  3. You can optionally test the certificate path and server name override by adding the following options to the command above.
    • Specify this option to test the certificate without adding it to the certificate store.

      -cert <file path to certificate>
    • Specify this option to test the connection if there is a mismatch between the ExtraHop system hostname that the forwarder knows (SERVER) and the common name (CN) that is presented in the SSL certificate of the ExtraHop system.

      -server-name-override <common name>
(Optional) Configure a server name override

If there is a mismatch between the ExtraHop system hostname that the forwarder knows (SERVER) and the common name (CN) that is presented in the SSL certificate of the ExtraHop system, then the forwarder must be configured with the correct CN.

We recommend that you regenerate the SSL self-signed certificate based on the hostname from the SSL Certificate section of the Administration settings instead of specifying this parameter.
  1. Log in to your Linux server.
  2. Open the configuration file in a text editor.
    vi /opt/extrahop/etc/extrahop-key-forwarder.conf
  3. Add a SERVER_NAME_OVERRIDE parameter with a value of the name found in the ExtraHop system SSL certificate, similar to the following example:
    SERVER_NAME_OVERRIDE=altname.example.com
  4. Save the file and exit the text editor.
  5. Start the extrahop-key-forwarder service.
    sudo service extrahop-key-forwarder start
Key receiver system health metrics

The ExtraHop system provides key receiver metrics that you can add to a dashboard chart to monitor key receiver health and functionality.

To view a list of available metrics, click the System Settings icon and then click Metric Catalog. Type key receiver in the filter field to display all available key receiver metrics.

Tip:To learn how to create a new dashboard chart, see Edit a chart with the Metric Explorer.
View connected session key forwarders

You can view recently connected session key forwarders after you install the session key forwarder on your server and enable the SSL session key receiver service on the ExtraHop system. Note that this page only displays session key forwarders that have connected over the last few minutes, not all session key forwarders that are currently connected.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Shared Secrets.
Uninstall the software

If you no longer want the ExtraHop session key forwarder software installed, complete the following steps.

  1. Log in to the Linux server.
  2. Open a terminal application and choose one of the following options to remove the software.
    • For RPM-based servers, run the following command:
      sudo rpm --erase extrahop-key-forwarder
    • For Debian and Ubuntu servers, run the following command:
      sudo apt-get --purge remove extrahop-key-forwarder

      Type Y at the prompt to confirm the software removal and then press ENTER.

  3. Click Yes to confirm.
  4. After the software is removed, click Yes to restart the system
Common error messages

Errors created by the session key forwarder are logged to the Linux system log file.

Message Cause Solution
connect: dial tcp <IP address>:4873: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond The monitored server cannot route any traffic to the Discover appliance. Ensure firewall rules allow connections to be initiated by the monitored server to TCP port 4873 on the Discover appliance.
connect: dial tcp <IP address>:4873: connectex: No connection could be made because the target machine actively refused it The monitored server can route traffic to the Discover appliance, but the receiving process is not listening. Ensure that the Discover appliance is licensed for both the SSL Decryption and SSL Shared Secrets features.
connect: x509: certificate signed by unknown authority The monitored server is not able to chain up the Discover appliance certificate to a trusted Certificate Authority (CA). Ensure that the Linux certificate store for the computer account has trusted root certificate authorities that establish a chain of trust for the Discover appliance.
connect: x509: cannot validate certificate for <IP address> because it doesn't contain any IP SANs An IP address was supplied as the SERVER parameter when installing the forwarder, but the SSL certificate presented by the Discover appliance does not include an IP address as a Subject Alternate Name (SAN). Select from the following three solutions.
  • Replace the IP address for the SERVER value in the /etc/init.d/extrahop-key-forwarder file with a hostname. The hostname must match the subject name in the Discover appliance certificate.
  • If the server is required to connect to the Discover appliance by IP address, uninstall and reinstall the forwarder, specifying the subject name from the Discover appliance certificate as the value of server-name-override.
  • Re-issue the Discover appliance certificate to include an IP Subject Alternative Name (SAN) for the given IP address.
Supported SSL/TLS cipher suites

The ExtraHop system can decrypt SSL/TLS traffic that has been encrypted with PFS or RSA cipher suites. All supported cipher suites can be decrypted by installing the session key forwarder on a server and configuring the ExtraHop system.

Cipher suites for RSA can also decrypt the traffic with a certificate and private key—with or without session key forwarding.

Decryption methods
The table below provides a list of cipher suites that the ExtraHop system can decrypt along with the supported decryption options.
  • PFS + GPP: the ExtraHop system can decrypt these cipher suites with session key forwarding and global protocol to port mapping
  • PFS + Cert: the ExtraHop system can decrypt these cipher suites with the session key forwarding and the certificate and private key
  • RSA + Cert: the ExtraHop system can decrypt these cipher suites without session key forwarding as long as you have uploaded the certificate and private key.
Hex Value Name (IANA) Name (OpenSSL) Supported Decryption
0x04 TLS_RSA_WITH_RC4_128_MD5 RC4-MD5 PFS + GPP PFS + Cert RSA + Cert
0x05 TLS_RSA_WITH_RC4_128_SHA RC4-SHA PFS + GPP PFS + Cert RSA + Cert
0x0A TLS_RSA_WITH_3DES_EDE_CBC_SHA DES-CBC3-SHA PFS + GPP PFS + Cert RSA + Cert
0x16 TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA EDH-RSA-DES-CBC3-SHA PFS + GPP PFS + Cert
0x2F TLS_RSA_WITH_AES_128_CBC_SHA AES128-SHA PFS + GPP PFS + Cert RSA + Cert
0x33 TLS_DHE_RSA_WITH_AES_128_CBC_SHA DHE-RSA-AES128-SHA PFS + GPP PFS + Cert
0x35 TLS_RSA_WITH_AES_256_CBC_SHA AES256-SHA PFS + GPP PFS + Cert RSA + Cert
0x39 TLS_DHE_RSA_WITH_AES_256_CBC_SHA DHE-RSA-AES256-SHA PFS + GPP PFS + Cert
0x3C TLS_RSA_WITH_AES_128_CBC_SHA256 AES128-SHA256 PFS + GPP PFS + Cert RSA + Cert
0x3D TLS_RSA_WITH_AES_256_CBC_SHA256 AES256-SHA256 PFS + GPP PFS + Cert RSA + Cert
0x67 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 DHE-RSA-AES128-SHA256 PFS + GPP PFS + Cert
0x6B TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 DHE-RSA-AES256-SHA256 PFS + GPP PFS + Cert
0x9C TLS_RSA_WITH_AES_128_GCM_SHA256 AES128-GCM-SHA256 PFS + GPP PFS + Cert RSA + Cert
0x9D TLS_RSA_WITH_AES_256_GCM_SHA384 AES256-GCM-SHA384 PFS + GPP PFS + Cert RSA + Cert
0x9E TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 DHE-RSA-AES128-GCM-SHA256 PFS + GPP PFS + Cert
0x9F TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 DHE-RSA-AES256-GCM-SHA384 PFS + GPP PFS + Cert
0x1301 TLS_AES_128_GCM_SHA256 TLS_AES_128_GCM_SHA256 PFS + GPP PFS + Cert
0x1302 TLS_AES_256_GCM_SHA384 TLS_AES_256_GCM_SHA384 PFS + GPP PFS + Cert
0x1303 TLS_CHACHA20_POLY1305_SHA256 TLS_CHACHA20_POLY1305_SHA256 PFS + GPP PFS + Cert
0xC007 TLS_ECDHE_ECDSA_WITH_RC4_128_SHA ECDHE-ECDSA-RC4-SHA PFS + GPP
0xC008 TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA ECDHE-ECDSA-DES-CBC3-SHA PFS + GPP
0xC009 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA ECDHE-ECDSA-AES128-SHA PFS + GPP
0xC00A TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA ECDHE-ECDSA-AES256-SHA PFS + GPP
0xC011 TLS_ECDHE_RSA_WITH_RC4_128_SHA ECDHE-RSA-RC4-SHA PFS + GPP PFS + Cert
0xC012 TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA ECDHE-RSA-DES-CBC3-SHA PFS + GPP PFS + Cert
0xC013 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDHE-RSA-AES128-SHA PFS + GPP PFS + Cert
0xC014 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA ECDHE-RSA-AES256-SHA PFS + GPP PFS + Cert
0xC023 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 ECDHE-ECDSA-AES128-SHA256 PFS + GPP
0xC024 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 ECDHE-ECDSA-AES256-SHA384 PFS + GPP
0xC027 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 ECDHE-RSA-AES128-SHA256 PFS + GPP PFS + Cert
0xC028 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDHE-RSA-AES256-SHA384 PFS + GPP PFS + Cert
0xC02B TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDHE-ECDSA-AES128-GCM-SHA256 PFS + GPP
0xC02C TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 ECDHE-ECDSA-AES256-GCM-SHA384 PFS + GPP
0xC02F TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDHE-RSA-AES128-GCM-SHA256 PFS + GPP PFS + Cert
0xC030 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDHE-RSA-AES256-GCM-SHA384 PFS + GPP PFS + Cert
0xCCA8 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 ECDHE-RSA-CHACHA20-POLY1305 PFS + GPP PFS + Cert
0xCCA9 TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 ECDHE-ECDSA-CHACHA20-POLY1305 PFS + GPP
0xCCAA TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 DHE-RSA-CHACHA20-POLY1305 PFS + GPP PFS + Cert
Session key forwarder options

You can configure the session key forwarder by editing the /opt/extrahop/etc/extrahop-key-forwarder.conf file.

The table below lists all of the configurable options.
Important:If you add options to extrahop-key-forwarder.conf that do not have dedicated variables, they must be in the ADDITIONAL_ARGS field. For example:
ADDITIONAL_ARGS="-v=true -libcrypto=/some/path/libcrypto.so 
-libcrypto=/some/other/path/libcrypto.so"
Option Description
-cert <path> Specifies the path to the server certificate. Only specify this option if the server certificate is not signed by a trusted certificate authority.
-docker-enable Enables the enumeration of Docker containers. You must type -docker-enable=false to disable Docker support.
-docker-envoy <path> Specifies additional Envoy paths within Docker containers. You can specify this option multiple times.
-docker-go-binary <value> Specifies glob patterns to find Go binaries within Docker containers. You can specify this option multiple times.
-docker-libcrypto <path> Specifies the path to libcrypto within Docker containers. You can specify this option multiple times.
-envoy <path> Specifies additional Envoy paths on the host. You can specify this option multiple times.
-go-binary <value> Specifies glob patterns to find Go binaries. You can specify this option multiple times.
-hearbeat-interval Specifies the time interval in seconds between heartbeat messages. The default interval is 30 seconds.
-host-mount-path <path> Specifies the path where the host file system is mounted when running the session key forwarder inside a container.
-hosted <platform> Specifies that the agent is running in the specified hosted platform. The platform is currently limited to aws.
-ldconfig-cache <path> Specifies the path to the ldconfig cache, ld.so.cache. The default path is /etc/ld.so.cache. You can specify this option multiple times.
-libcrypto <path> Specifies the path to the OpenSSL library, libcrypto. You can specify this option multiple times if you have multiple installations of OpenSSL.
-no-docker-envoy Disables Envoy support within Docker containers.
-no-envoy Disables Envoy support on the host.
-openssl-discover Automatically discovers libcrypto implementations. The default value is "true". You must type -openssl-discover=false to disable OpenSSL decryption.
-pidfile <path> Specifies the file where this server records its process ID (PID).
-port <value> Specifies the TCP port that the Discover appliance is listening on for forwarded session keys. The default port is 4873.
-server <string> Specifies the fully qualified domain name of the ExtraHop Discover appliance.
-server-name-override <value> Specifies the subject name from the Discover appliance certificate. Specify this option if this server can only connect to the Discover appliance by IP address.
-syslog <facility> Specifies the facility sent by the key forwarder. The default facility is local3.
-t Perform a connectivity test. You must type -t=true to run with this option.
-tcp-listen-port <value> Specifies the TCP port that the key forwarder is listening on for forwarded session keys.
-username <string> Specifies the user that the session key forwarder runs under after the forwarder software is installed.
-v Enable verbose logging. You must type -v=true to run with this option.
Linux environment variables

The following environment variables enable you to install the session key forwarder without user interaction.

Variable Description Example
EXTRAHOP_CONNECTION_MODE Specifies the connection mode to the session key receiver. Options are direct for self-managed sensors and hosted for ExtraHop-managed sensors. sudo EXTRAHOP_CONNECTION_MODE=hosted rpm --install extrahop-key-forwarder.x86_64.rpm
EXTRAHOP_EDA_HOSTNAME Specifies the fully qualified domain name of the self-managed sensor. sudo EXTRAHOP_CONNECTION_MODE=direct EXTRAHOP_EDA_HOSTNAME=host.example.com dpkg --install extrahop-key-forwarder_amd64.deb
EXTRAHOP_LOCAL_LISTENER_PORT The key forwarder receives session keys locally from the Java environment through a TCP listener on localhost (127.0.0.1) and the port specified in the LOCAL_LISTENER_PORT field. We recommended that this port remain set to the default of 598. If you change the port number, you must modify the -javaagent argument to account for the new port. sudo EXTRAHOP_CONNECTION_MODE=direct EXTRAHOP_EDA_HOSTNAME=host.example.com EXTRAHOP_LOCAL_LISTENER_PORT=900 rpm --install extrahop-key-forwarder.x86_64.rpm
EXTRAHOP_SYSLOG Specifies the facility, or machine process, that created the syslog event. The default facility is local3, which is system daemon processes. sudo EXTRAHOP_CONNECTION_MODE=direct EXTRAHOP_EDA_HOSTNAME=host.example.com EXTRAHOP_SYSLOG=local1 dpkg --install extrahop-key-forwarder_amd64.deb
EXTRAHOP_ADDITIONAL_ARGS Specifies additional key forwarder options. sudo EXTRAHOP_CONNECTION_MODE=hosted EXTRAHOP_ADDITIONAL_ARGS="-v=true -libcrypto=/some/path/libcrypto.so libcrypto=/some/other/path/libcrypto.so" rpm --install extrahop-key-forwarder.x86_64.rpm
Supported SSL/TLS cipher suites

The ExtraHop system can decrypt SSL/TLS traffic that has been encrypted with PFS or RSA cipher suites. All supported cipher suites can be decrypted by installing the session key forwarder on a server and configuring the ExtraHop system.

Cipher suites for RSA can also decrypt the traffic with a certificate and private key—with or without session key forwarding.

Decryption methods
The table below provides a list of cipher suites that the ExtraHop system can decrypt along with the supported decryption options.
  • PFS + GPP: the ExtraHop system can decrypt these cipher suites with session key forwarding and global protocol to port mapping
  • PFS + Cert: the ExtraHop system can decrypt these cipher suites with the session key forwarding and the certificate and private key
  • RSA + Cert: the ExtraHop system can decrypt these cipher suites without session key forwarding as long as you have uploaded the certificate and private key.
Hex Value Name (IANA) Name (OpenSSL) Supported Decryption
0x04 TLS_RSA_WITH_RC4_128_MD5 RC4-MD5 PFS + GPP PFS + Cert RSA + Cert
0x05 TLS_RSA_WITH_RC4_128_SHA RC4-SHA PFS + GPP PFS + Cert RSA + Cert
0x0A TLS_RSA_WITH_3DES_EDE_CBC_SHA DES-CBC3-SHA PFS + GPP PFS + Cert RSA + Cert
0x16 TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA EDH-RSA-DES-CBC3-SHA PFS + GPP PFS + Cert
0x2F TLS_RSA_WITH_AES_128_CBC_SHA AES128-SHA PFS + GPP PFS + Cert RSA + Cert
0x33 TLS_DHE_RSA_WITH_AES_128_CBC_SHA DHE-RSA-AES128-SHA PFS + GPP PFS + Cert
0x35 TLS_RSA_WITH_AES_256_CBC_SHA AES256-SHA PFS + GPP PFS + Cert RSA + Cert
0x39 TLS_DHE_RSA_WITH_AES_256_CBC_SHA DHE-RSA-AES256-SHA PFS + GPP PFS + Cert
0x3C TLS_RSA_WITH_AES_128_CBC_SHA256 AES128-SHA256 PFS + GPP PFS + Cert RSA + Cert
0x3D TLS_RSA_WITH_AES_256_CBC_SHA256 AES256-SHA256 PFS + GPP PFS + Cert RSA + Cert
0x67 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 DHE-RSA-AES128-SHA256 PFS + GPP PFS + Cert
0x6B TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 DHE-RSA-AES256-SHA256 PFS + GPP PFS + Cert
0x9C TLS_RSA_WITH_AES_128_GCM_SHA256 AES128-GCM-SHA256 PFS + GPP PFS + Cert RSA + Cert
0x9D TLS_RSA_WITH_AES_256_GCM_SHA384 AES256-GCM-SHA384 PFS + GPP PFS + Cert RSA + Cert
0x9E TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 DHE-RSA-AES128-GCM-SHA256 PFS + GPP PFS + Cert
0x9F TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 DHE-RSA-AES256-GCM-SHA384 PFS + GPP PFS + Cert
0x1301 TLS_AES_128_GCM_SHA256 TLS_AES_128_GCM_SHA256 PFS + GPP PFS + Cert
0x1302 TLS_AES_256_GCM_SHA384 TLS_AES_256_GCM_SHA384 PFS + GPP PFS + Cert
0x1303 TLS_CHACHA20_POLY1305_SHA256 TLS_CHACHA20_POLY1305_SHA256 PFS + GPP PFS + Cert
0xC007 TLS_ECDHE_ECDSA_WITH_RC4_128_SHA ECDHE-ECDSA-RC4-SHA PFS + GPP
0xC008 TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA ECDHE-ECDSA-DES-CBC3-SHA PFS + GPP
0xC009 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA ECDHE-ECDSA-AES128-SHA PFS + GPP
0xC00A TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA ECDHE-ECDSA-AES256-SHA PFS + GPP
0xC011 TLS_ECDHE_RSA_WITH_RC4_128_SHA ECDHE-RSA-RC4-SHA PFS + GPP PFS + Cert
0xC012 TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA ECDHE-RSA-DES-CBC3-SHA PFS + GPP PFS + Cert
0xC013 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDHE-RSA-AES128-SHA PFS + GPP PFS + Cert
0xC014 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA ECDHE-RSA-AES256-SHA PFS + GPP PFS + Cert
0xC023 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 ECDHE-ECDSA-AES128-SHA256 PFS + GPP
0xC024 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 ECDHE-ECDSA-AES256-SHA384 PFS + GPP
0xC027 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 ECDHE-RSA-AES128-SHA256 PFS + GPP PFS + Cert
0xC028 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDHE-RSA-AES256-SHA384 PFS + GPP PFS + Cert
0xC02B TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDHE-ECDSA-AES128-GCM-SHA256 PFS + GPP
0xC02C TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 ECDHE-ECDSA-AES256-GCM-SHA384 PFS + GPP
0xC02F TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDHE-RSA-AES128-GCM-SHA256 PFS + GPP PFS + Cert
0xC030 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDHE-RSA-AES256-GCM-SHA384 PFS + GPP PFS + Cert
0xCCA8 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 ECDHE-RSA-CHACHA20-POLY1305 PFS + GPP PFS + Cert
0xCCA9 TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 ECDHE-ECDSA-CHACHA20-POLY1305 PFS + GPP
0xCCAA TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 DHE-RSA-CHACHA20-POLY1305 PFS + GPP PFS + Cert

Store SSL session keys on connected Trace appliances

When session key forwarding is configured on an ExtraHop system that is connected to a Trace appliance, the ExtraHop system can store encrypted session keys along with the collected packets.

Before you begin

Learn more about decrypting packets with stored keys.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Session Key Storage.
  4. Select Enable SSL Session Key Storage.
  5. Click Save.

Next steps

For more information about downloading session keys, see Download session keys with packet captures.

View connected session key forwarders

You can view recently connected session key forwarders after you install the session key forwarder on your server and enable the SSL session key receiver service on the ExtraHop system. Note that this page only displays session key forwarders that have connected over the last few minutes, not all session key forwarders that are currently connected.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click SSL Shared Secrets.

Decrypt domain traffic with a Windows domain controller

The ExtraHop system can be configured to retrieve and store domain keys from a domain controller. When the system observes encrypted traffic that matches the stored keys, all of the Kerberos-encrypted traffic in the domain is decrypted for supported protocols. The system only synchronizes Kerberos and NTLM decryption keys and does not modify any other properties in the domain.

A domain controller like Active Directory is a frequent target for attackers because a successful attack campaign yields high-value assets. Critical attacks can be obscured by Kerberos or NTLM decryption, such as Golden Ticket, PrintNightmare, and Bloodhound. Decrypting this type of traffic can provide deeper insight for security detections.

The following requirements must be met for decryption:

  • You must have an Active Directory domain controller (DC) that is not configured as a Read-only Domain Controller (RODC).
  • Only Windows Server 2016 and Windows Server 2019 are supported.
  • Only one domain controller can be configured on a sensor, which means you can decrypt the traffic from one domain per sensor.
  • The ExtraHop system synchronizes keys for up to 50,000 accounts in a configured domain. If your DC has more than 50,000 accounts, some traffic will not be decrypted.
  • The ExtraHop system must observe the network traffic between the DC and connected clients and servers.
  • The ExtraHop system must be able to access the domain controller over the following ports: TCP 88 (Kerberos), TCP 445 (SMB), TCP 135 (RPC), and TCP ports 49152-65535 (RPC dynamic range).
Add domain controller settings to the ExtraHop system
Warning:If you enable these settings, the ExtraHop system is granted access to all of the account keys in a Windows domain. The ExtraHop system should be deployed at the same security level as the domain controller. Here are some best practices to consider:
  • Strictly limit end-user access to sensors that are configured with access to the domain controller. Ideally, only permit end-user access to a connected Command appliance or Reveal(x) 360.
  • Configure sensors with an identity provider that has strong authentication features such as two-factor or multi-factor authentication.
  • Restrict inbound and outbound traffic to and from the sensor to the minimum necessary.
  • In Active Directory, limit the Logon Workstations for the account to only communicate with the domain controller that the ExtraHop system is configured with.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click Domain Controller.
  4. Select the Enable connection to the domain controller checkbox.
  5. Complete the following fields:

    Hostname: The fully qualified domain name of the Windows server.

    Computer Name (sAMAccountName): The name of the Windows server.

    Realm Name: The Kerberos realm name of the Windows server.

    User Name: The name of a user who is a member of the built-in Administrators group for the domain (not to be confused with the Domain Admins group). To prevent possible connection errors, specify a user account created after the domain controller was established.

    Password: The password of the privileged user.

  6. Click Test Connection to confirm that the sensor can communicate with the Windows server.
  7. Click Save.
Validate the configuration settings

To validate that the ExtraHop system is able to decrypt traffic with the domain controller, create a dashboard that identifies successful decryption attempts.

  1. Create a new dashboard.
  2. Click the chart widget to add the metric source.
  3. Click Add Source.
  4. In the Sources field, type Discover in the search field and then select Discover Appliance.
  5. In the Metrics field, type DC in the search field and then select DC-Assisted Decryption Health - Successful Kerberos Decryption Attempts by SPN.
  6. Click Save.
The chart appears with a count of successful decryption attempts.

Additional system health metrics
The ExtraHop system provides metrics that you can add to a dashboard to monitor DC-assisted decryption health and functionality.

To view a list of available metrics, click the System Settings icon and then click Metric Catalog. Type DC-Assisted in the filter field to display all available DC-assisted decryption metrics.



Import external data to your ExtraHop system

The ExtraHop Open Data Context API enables you to import data from an external host into the session table on your ExtraHop sensor. That data can then be accessed to create custom metrics that you can add to ExtraHop charts, store in records on a recordstore, or export to a external analysis tool.

After you enable the Open Data Context API on your sensor, you can import data by running a Python script from a memcached client on an external host. That external data is stored in key-value pairs, and can be accessed by writing a trigger.

For example, you might run a memcached client script on an external host to import CPU load data into the session table on your Discover appliance. Then, you can write a trigger that accesses the session table and commits the data as custom metrics.

Warning:The connection between the external host and the ExtraHop system is not encrypted and should not transmit sensitive information.
Enable the Open Data Context API

You must enable the Open Data Context API on your sensor before it can receive data from an external host.

Before you begin

  • You must have unlimited privileges to access the Administration page on your ExtraHop system.
  • If you have a firewall, your firewall rules must allow external hosts to access the specified TCP and UDP ports. The default port number is 11211.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click Open Data Context API.
  4. Click Enable Open Data Context API.
  5. Configure each protocol that you want to allow external data transmissions through:
    Option Description
    TCP
    1. Select the TCP Port enabled checkbox.
    2. In the TCP Port field, type the port number that will receive external data.
    UDP
    1. Select the UDP Port enabled checkbox.
    2. In the UDP Port field, type the port number that will receive external data.
  6. Click Save and Restart Capture.
    Important:The sensor will not collect metrics while it is restarting.
  7. Click Done.
Write a Python script to import external data

Before you can import external data into the session table on your sensor, you must write a Python script that identifies your sensor and contains the data you want to import into the session table. The script is then run from a memcached client on the external host.

This topic provides syntax guidance and best practices for writing the Python script. A complete script example is available at the end of this guide.

Before you begin

Ensure that you have a memcached client on the external host machine. You can install any standard memcached client library, such as http://libmemcached.org/ or https://pypi.python.org/pypi/pymemcache. The sensor acts as a memcached version 1.4 server.

Here are some important considerations about the Open Data Context API:
  • The Open Data Context API supports most memcached commands, such as get, set, and increment.
  • All data must be inserted as strings that are readable by the sensor. Some memcached clients attempt to store type information in the values. For example, the Python memcache library stores floats as pickled values, which cause invalid results when calling Session.lookup in triggers. The following Python syntax correctly inserts a float as a string:
    mc.set("my_float", str(1.5))
  • Although session table values can be almost unlimited in size, committing large values to the session table might cause performance degradation. In addition, metrics committed to the datastore must be 4096 bytes or fewer, and oversized table values might result in truncated or imprecise metrics.
  • Basic statistics reporting is supported, but detailed statistics reporting by item size or key prefix is not supported.
  • Setting item expiration when adding or updating items is supported, but bulk expiration through the flush command is not supported.
  • Keys expire at 30-second intervals. For example, if a key is set to expire in 50 seconds, it can take from 50 to 79 seconds to expire.
  • All keys set with the Open Data Context API are exposed through the SESSION_EXPIRE trigger event as they expire. This behavior is in contrast to the Trigger API, which does not expose expiring keys through the SESSION_EXPIRE event.
  1. In a Python editor, open a new file.
  2. Add the IP address of your sensor and the port number where the memcached client will send data, similar to the following syntax:
    client = memcache.Client(["eda_ip_address:eda_port"])
  3. Add the data you want to import to the session table through the memcached set command, formatted in key-value pairs, similar to the following syntax:
    client.set("some_key", "some_value")
  4. Save the file.
  5. Run the Python script from the memcached client on the external host.
Write a trigger to access imported data

You must write a trigger before you can access the data in the session table.

Before you begin

This topic assumes experience with writing triggers. If you are unfamiliar with triggers, check out the following topics:
  1. Log in to the ExtraHop system through https://<extrahop-hostname-or-IP-address>.
  2. Click the System Settings icon and then click Triggers.
  3. Click New, and then click the Configuration tab.
  4. In the Name field, type a unique name for the trigger.
  5. In the Events field, begin typing an event name and then select an event from the filtered list.
  6. Click the Editor tab.
  7. In the Trigger Script textbox, write a trigger script that accesses and applies the session table data. A complete script example is available at the end of this guide.
    The script must include the Session.lookup method to locate a specified key in the session table and return the corresponding value.

    For example, the following code looks up a specific key in the session table to return the corresponding value, and then commits the value to an application as a custom metric:

    var key_lookup = Session.lookup("some_key");
                    Application("My App").metricAddDataset("my_custom_metric",
                    key_lookup);
    Tip:You can also add, modify, or delete key-value pairs in the session table through methods described in the Session class of the ExtraHop Trigger API Reference.
  8. Click Save and Close.

Next steps

You must assign the trigger to a device or device group. The trigger will not run until it has been assigned.
Open Data Context API example

In this example, you will learn how to check the reputation score and potential risk of domains that are communicating with devices on your network. First, the example Python script shows you how to import domain reputation data into the session table on your sensor. Then, the example trigger script shows you how to check IP addresses on DNS events against that imported domain reputation data and how to create a custom metric from the results.

Example Python script

This Python script contains a list of 20 popular domain names and can reference domain reputation scores obtained from a source such as DomainTools.

This script is a REST API that accepts a POST operation where the body is the domain name. Upon a POST operation, the memcached client updates the session table with the domain information.

#!/usr/bin/python
import flask
import flask_restful
import memcache
import sqlite3

top20 = { "google.com", "facebook.com", "youtube.com", "twitter.com",
          "microsoft.com", "wikipedia.org", "linkedin.com",
          "apple.com","adobe.com", "wordpress.org", "instagram.com",
          "wordpress.com", "vimeo.com", "blogspot.com", "youtu.be", 
          "pinterest.com", "yahoo.com", "goo.gl", "amazon.com", "bit.ly}

dnsnames = {}

mc = memcache.Client(['10.0.0.115:11211'])

for dnsname in top20:    
    dnsnames[dnsname] = 0.0    

dbc = sqlite3.Connection('./dnsreputation.db')
cur = dbc.cursor()
cur.execute('select dnsname, score from dnsreputation;')
for row in cur:
    dnsnames[row[0]] = row[1]
dbc.close()

app = flask.Flask(__name__)
api = flask_restful.Api(app)

class DnsReputation(flask_restful.Resource):    
    def post(self):        
        dnsname = flask.request.get_data()        
        #print dnsname        
        mc.set(dnsname, str(dnsnames.get(dnsname, 50.0)), 120)        
        return 'added to session table'

api.add_resource(DnsReputation, '/dnsreputation')

if __name__ == '__main__':     
     app.run(debug=True,host='0.0.0.0')
Example trigger script

This example trigger script canonicalizes (or converts) IP addresses that are returned on DNS events into domain names, and then checks for the domain and its reputation score in the session table. If the score value is greater than 75, the trigger adds the domain to an application container called "DNSReputation" as a detail metric called "Bad DNS reputation".

//Configure the following trigger settings:
//Name: DNSReputation
//Debugging: Enabled
//Events: DNS_REQUEST, DNS_RESPONSE

if (DNS.errorNum != 0 || DNS.qname == null 
    || DNS.qname.endsWith("in-addr.arpa") || DNS.qname.endsWith("local") 
    || DNS.qname.indexOf('.') == -1 ) {
    // error or null or reverse lookup, or lookup of local namereturn
    return;
}

//var canonicalname = DNS.qname.split('.').slice(-2).join('.');
var canonicalname = DNS.qname.substring(DNS.qname.lastIndexOf('.', DNS.qname.lastIndexOf('.')-1)+1)

//debug(canonicalname);


//Look for this DNS name in the session table
var score = Session.lookup(canonicalname)
if (score === null) {
    // Send to the service for lookup
    Remote.HTTP("dnsrep").post({path: "/dnsreputation", payload: canonicalname});
} else {
    debug(canonicalname + ':' +score);
    if (parseFloat(score) > 75) {
	 //Create an application in the ExtraHop system and add custom metrics
        //Note: The application is not displayed in the ExtraHop system after the 
	 //initial request, but is displayed after subsequent requests. 
        Application('DNSReputation').metricAddDetailCount('Bad DNS reputation', canonicalname + ':' + score, 1);
    }
}

Install the packet forwarder on a Linux server

You must install the packet forwarder software on each server to be monitored in order to forward packets to the ExtraHop system.

RPCAP installation files and instructions are available from the ExtraHop Downloads and Resources web page.
Download and install on RPM-based systems
  1. Download the RPCAP installer file from the ExtraHop Downloads and Resources web page.
  2. Install the software on the server by running the following command:
    sudo rpm -i rpcapd-<extrahop_firmware_version>.x86_64.rpm
  3. Open and edit the rpcapd.ini file in a text editor by running one of the following commands:
    vim /opt/extrahop/etc/rpcapd.ini
    nano /opt/extrahop/etc/rpcapd.ini
    Example output:
    #ActiveClient = <TARGETIP>,<TARGETPORT>
    NullAuthPermit = YES

    Replace <TARGETIP> with the IP address of the ExtraHop system, and <TARGETPORT> with 2003. In addition, uncomment the line by deleting the number sign (#) at the beginning of the line.

    For example:
    ActiveClient = 10.10.10.10,2003
    NullAuthPermit = YES
  4. Start sending traffic to the ExtraHop system by running the following command:
    sudo /etc/init.d/rpcapd start
  5. (Optional): Verify the ExtraHop system is receiving traffic by running the following command:
    sudo service rpcapd status
Download and install on other Linux systems
  1. Download the RPCAP installer file from the ExtraHop Downloads and Resources web page.
  2. Install the software on the server by running the following commands:
    1. Extract the packet forwarder files from the archive file:
      tar xf rpcapd-<extrahop_firmware_version>.tar.gz
    2. Change to the rpcapd directory:
      cd rpcapd
    3. Run the installation script:
      sudo ./install.sh <extrahop_ip> 2003
  3. (Optional): Verify the ExtraHop system is receiving traffic by running the following command:
    sudo /etc/init.d/rpcapd status
To run the software on servers with multiple interfaces, See Monitoring multiple interfaces on a Linux server.
Download and install on Debian-based systems

To download and install the packet forwarder on Debian-based systems:

  1. Download the RPCAP installer file from the ExtraHop Downloads and Resources web page.
  2. Install the software on the server by running the following command:
    sudo dpkg -i rpcapd_<extrahop_firmware_version>_amd64.deb
  3. At the prompt, enter the ExtraHop IP address, confirm the default connection to port 2003, and press ENTER.
  4. (Optional): Verify the ExtraHop system is receiving traffic by running the following commands:
    sudo dpkg --get-selections | grep rpcapd
    
    sudo service rpcapd status
  5. (Optional): To change the ExtraHop IP address, port number, or arguments to the service, run the following command.
    sudo dpkg-reconfigure rpcapd

Install the packet forwarder on a Windows server

You must install the packet forwarder software on each server to be monitored in order to forward packets to the ExtraHop system.

  1. Download the RPCAP Service for Windows installer file from the ExtraHop Downloads and Resources web page.
  2. Double-click the file to start the installer.
  3. In the wizard, select the components to install.
  4. Complete the ExtraHop IP and ExtraHop Port fields and click Next. The default port is 2003.
  5. (Optional): Enter additional arguments in the text box and click Next.
  6. Browse to and select the destination folder to install RPCAP Service.
  7. If RPCAP Service was previously installed, click Yes to delete the previous service.
  8. When the installation is complete, click Close.

Monitoring multiple interfaces on a Linux server

For servers with multiple interfaces, you can configure the packet forwarder to forward packets from a particular interface or from multiple interfaces by editing its configuration file on the server.

To edit the configuration file, complete the following steps.

  1. After installing the packet forwarder, open the configuration file, /opt/extrahop/etc/rpcapd.ini.
    The configuration file contains this text or similar:
    ActiveClient = 10.0.0.100,2003
    NullAuthPermit = YES
  2. Modify the existing ActiveClient line and create an ActiveClient line for each additional interface to be monitored. Specify each interface by its interface name or IP address.
    ActiveClient = <extrahop_ip>, <extrahop_port>, ifname=<interface_name>

    or

    ActiveClient = <extrahop_ip>, <extrahop_port>, ifaddr=<interface_address>

    Where <interface_name> is the name of the interface from which you want to forward packets, and <interface_address> is the IP address of the interface from which the packets are forwarded. The <interface_address> variable can be either the IP address itself, such as 10.10.1.100, or a CIDR specification (network IP address/subnet prefix length) that contains the IP address, such as 10.10.1.0/24.

    For every ActiveClient line, the packet forwarder independently forwards packets from the interface specified in the line.

    The following is an example of the configuration file specifying two interfaces by the interface name:

    ActiveClient = 10.10.6.45, 2003, ifname=eth0
    ActiveClient = 10.10.6.45, 2003, ifname=eth1
    NullAuthPermit = YES

    The following is an example of the configuration file specifying two interfaces by the interface IP address:

    ActiveClient = 10.10.6.45, 2003, ifaddr=10.10.1.100
    ActiveClient = 10.10.6.45, 2003, ifaddr=10.10.2.100
    NullAuthPermit = YES

    The following is an example of the configuration file specifying two interfaces using CIDR specifications that contain the interface IP address:

    ActiveClient = 10.10.6.45, 2003, ifaddr=10.10.1.0/24
    ActiveClient = 10.10.6.45, 2003, ifaddr=10.10.2.0/24
    NullAuthPermit = YES
  3. Save the configuration file. Make sure to save the file in ASCII format to prevent errors.
  4. Restart the packet forwarder by running the command:
    sudo /etc/init.d/rpcapd restart
    Note:To reinstall the packet forwarder after changing the configuration file, run the installation command and replace <extrahop_ip> and <extrahop_port> with the –k flag in order to preserve the modified configuration file. For example:
    sudo sh ./install-rpcapd.sh –k

Monitoring multiple interfaces on a Windows server

For servers with multiple interfaces, you can configure the packet forwarder to forward packets from a particular interface or from multiple interfaces by editing its configuration file on the server.

To edit the configuration file, complete the following steps.

  1. After installing the packet forwarder on the server, open the configuration file: C:\Program Files\rpcapd\rpcapd.ini
    The configuration file contains this text or similar:
    ActiveClient = 10.0.0.100,2003
    NullAuthPermit = YES
  2. Modify the existing ActiveClient line and create an ActiveClient line for each additional interface to be monitored. Specify each interface by its interface name or IP address.
    ActiveClient = <extrahop_ip>, <extrahop_port>, ifname=<interface_address>

    Where <interface_address> is the IP address of the interface from which the packets are forwarded and <interface_address> can be either the IP address itself, such as 10.10.1.100, or a CIDR specification (network IP address/subnet prefix length) that contains the IP address, such as 10.10.1.0/24.

    or

    ActiveClient = <extrahop_ip>, <extrahop_port>, ifaddr=<interface_name>

    Where <interface_name> is the name of the interface from which the packets are forwarded. The name is formatted as \Device\NPF_{<GUID>}, where <GUID> is the globally unique identifier (GUID) of the interface. For example, if the interface GUID is 2C2FC212-701D-42E6-9EAE-BEE969FEFB3F, the interface name is \Device\NPF_{2C2FC212-701D-42E6-9EAE-BEE969FEFB3F}.

    The following is an example of the configuration file specifying two interfaces with the interface IP address:

    ActiveClient = 10.10.6.45, 2003, ifaddr=10.10.1.100
    ActiveClient = 10.10.6.45, 2003, ifaddr=10.10.2.100
    NullAuthPermit = YES

    The following is an example of the configuration file specifying two interfaces with CIDR specifications that contain the interface IP address:

    ActiveClient = 10.10.6.45, 2003, ifaddr=10.10.1.0/24
    ActiveClient = 10.10.6.45, 2003, ifaddr=10.10.2.0/24
    NullAuthPermit = YES

    The following is an example of the configuration file specifying two interfaces with the interface name:

    ActiveClient = 10.10.6.45, 2003, ifname=\Device\NPF_{2C2FC212-701D-42E6-9EAE-BEE969FEFB3F}
    ActiveClient = 10.10.6.45, 2003, ifname=\Device\NPF_{3C2FC212-701D-42E6-9EAE-BEE969FEFB3F}
    NullAuthPermit = YES
  3. Save the configuration (.ini) file. Make sure to save the file in ASCII format to prevent errors.
  4. Restart the packet forwarder by running the following command:
    restart-service rpcapd
    Note:To reinstall the packet forwarder software after changing the configuration file, run the installation command and replace -RpcapIp and -RpcapPort with the -KeepConfig flag to preserve the modified configuration file. For example:
    .\install-rpcapd.ps1 -MgmtIp <extrahop_ip> -KeepConfig

    or

    .\install-rpcapd.ps1 –InputDir . -KeepConfig

Enable network overlay decapsulation

Network overlay encapsulation wraps standard network packets in outer protocol headers to perform specialized functions, such as smart routing and virtual machine networking management. Network overlay decapsulation enables the ExtraHop system to remove these outer encapsulating headers and then process the inner packets.

Note:Enabling NVGRE and VXLAN decapsulation on your ExtraHop system can increase your device count as virtual devices are discovered on the network. Discovery of these virtual devices can affect Advanced Analysis and Standard Analysis capacity and the additional metrics processing can cause performance to degrade in extreme cases.

MPLS, TRILL, and Cisco FabricPath protocols are automatically decapsulated by the ExtraHop system.

Enable NVGRE decapsulation
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click Network Overlay Decapsulation.
  4. In the Settings section, select the Enabled checkbox next to NVGRE.
  5. Click Save.
  6. Click OK.
Enable VXLAN decapsulation

VXLAN is a UDP tunneling protocol configured for specific destination ports. Decapsulation is not attempted unless the destination port in a packet matches the UDP destination port or ports listed in the VXLAN decapsulation settings.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click Network Overlay Decapsulation.
  4. In the Settings section, select the Enabled checkbox next to VXLAN.
  5. In the VXLAN UDP Destination Port field, type a port number and click the green plus (+) .
    By default, port 4789 is added to the UDP Destination Port list. You can add up to eight destination ports.
  6. Click Save.
  7. Click OK.

Analyze a packet capture file

The offline capture mode enables administrators to upload and analyze a capture file recorded by packet analyzer software, such as Wireshark or tcpdump, in the ExtraHop system.

Here are some important considerations before enabling offline capture mode:

  • When the capture is set to offline mode, the system datastore is reset. All previously recorded metrics are deleted from the datastore. When the system is set to online mode, the datastore is reset again.
  • In offline mode, no metrics are collected from the capture interface until the system is set to online mode again.
  • Only capture files in the pcap format are supported. Other formats such as pcpapng are not supported.
Set the offline capture mode
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Capture.
  3. Click Offline Capture File.
  4. Select Upload and then click Save.
  5. Click OK to confirm the datastore reset.
    The capture process is stopped, the capture state is set to offline, and the datastore is cleared of all data. When the system has set the capture to offline mode, the Offline Capture File page appears.
  6. Click Choose File, browse to the capture file that you want to upload, select the file, and then click Open.
  7. Click Upload.
    The ExtraHop system displays the Offline Capture Results page when the capture file uploads successfully.
  8. Click View Results to analyze the packet capture file as you would when the system is in live capture mode.
Return the system to live capture mode
  1. In the System Configuration section, click Capture (offline).
  2. Click Restart Capture.
  3. Select Live, and then click Save.
The system removes the performance metrics collected from the previous capture file and prepares the datastore for real-time analysis from the capture interface.

Datastore

The ExtraHop system includes a self-contained, streaming datastore for storing and retrieving performance and health metrics in real time. This local datastore bypasses the operating system and accesses the underlying block devices directly, rather than going through a conventional relational database.

Local and extended datastores

The ExtraHop system includes a self-contained, streaming datastore for storing and retrieving performance and health metrics in real time. This local datastore bypasses the operating system and accesses the underlying block devices directly, rather than going through a conventional relational database.

The local datastore maintains entries for all devices discovered by the ExtraHop system as well as metrics for those devices. By storing this information, the ExtraHop system is able to provide both quick access to the latest network capture and historic and trend-based information about selected devices.

Extended datastore

The ExtraHop system can connect to an external storage device to expand your metric storage. By default, the ExtraHop system stores fast (30-second), medium (5-minute), and slow (1-hour) metrics locally. However, you can store 5-minute, 1-hour, and 24-hour metrics on an extended datastore.

To store metrics externally, you must first mount an external datastore, and then configure the ExtraHop system to store data in the mounted directory. You can mount an external datastore through NFS v4 (with optional Kerberos authentication) or CIFS (with optional authentication).

Note that you can configure only one active extended datastore at a time to collect all configured metric cycles. For example, if you configure your extended datastore to collect 5-minute, 1-hour, and 24-hour metrics, all three metric cycles are stored in the same extended datastore. In addition, you can archive an extended datastore and those metrics are available for read-only requests from multiple ExtraHop systems.

Here are some important things to know about configuring an external datastore:

  • If an extended datastore contains multiple files with overlapping timestamps, the metrics will be incorrect.
  • If an extended datastore has metrics committed by an ExtraHop system running a later firmware version, the system with the older firmware cannot read those metrics.
  • If an extended datastore becomes unreachable, the ExtraHop system buffers metrics until the allocated memory is full. After the memory is full, the system overwrites older blocks until the connection is restored. When the mount reconnects, all of the metrics stored in memory are written to the mount.
  • If an extended datastore file is lost or corrupted, metrics contained in that file are lost. Other files in the extended datastore remain intact.
  • As a security measure, the system does not allow access to the stored plaintext password for the datastore.

Calculate the size needed for your extended datastore

The extended datastore must have enough space to contain the amount of data generated by the ExtraHop system. The following procedure explains how you can calculate approximately how much free space you need for your extended datastore.

Before you begin

Familiarize yourself with ExtraHop datastore concepts.
In the following example, we show you how to calculate the amount of storage space required for 30 days worth of 5-minute metrics.
  1. Log in to the ExtraHop system through https://<extrahop-hostname-or-IP-address>.
  2. Click the System Settings icon, and then click System Health.
  3. Scroll down to the Data Feed section.
  4. In the Metric Data Lookback Estimates chart, note the Rate and Estimated Lookback for each metric cycle (or time period) that you want to store on the external datastore. Estimates are based on metrics written during the selected time interval.


  5. Calculate the amount of required space by applying the following formula: <rate> x <lookback_time>, and then convert the value to standard units.
    For example, in the figure above the rate for 5-minute metrics is 39.3 KB/s.
    1. Convert the rate from seconds to days: 39.3 * 60 (seconds) * 60 (minutes) * 24 (hours) * 30 (days) = 101865600 KB for 30 days of lookback.
    2. Convert the rate from kilobytes to megabytes: 101865600 / 1024 = 99478 MB for 30 days of lookback.
    3. Convert the rate from megabytes to gigabytes:99478 / 1024 = 97 GB for 30 days of lookback.
    To store all of the 5 minute metrics from this appliance for 30 days, you need 97 GB of free space.

Configure an extended CIFS or NFS datastore

The following procedures show you how to configure an external datastore for the ExtraHop system.

To configure an extended datastore, you will complete the following steps:
  • First, you mount the NFS or CIFS share where you want to store data.
  • For NFS, optionally configure Kerberos authentication before you add the NFS mount.
  • Finally, specify the newly added mount as the active datastore.
Add a CIFS mount
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Datastore.
  3. In the Extended Datastore Settings section, click Configure Extended Datastore.
  4. Click Add Mount.
  5. Click Add CIFS Mount.
  6. On the Configure CIFS Mount page, enter the following information:
    Mount Name
    A name for the mount; for example, EXDS_CIFS.
    Remote Share Path
    The path for the share in the following format:
    \\host\mountpoint

    For example:

    \\herring\extended-datastore
    SMB Version
    The SMB version that is compatible with your file server.
    Domain
    The site domain.
  7. If password protection is required, complete the following steps:
    1. From the Authentication drop-down menu, select password.
    2. In the User and Password fields, type a valid username and password.
  8. Click Save.
(Optional) Configure Kerberos for NFS
You must configure any desired Kerberos authentication before you add an NFS mount.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Datastore and Customizations.
  3. In the Extended Datastore Settings section, click Configure Extended Datastore.
  4. Click Add Kerberos Config, then complete the following information.
    1. In the Admin Server field, type the IP address or hostname of the master Kerberos server that issues tickets.
    2. In the Key Distribution Center (KDC) field, type the IP address or hostname of the server that holds the keys.
    3. In the Realm field, type the name of the Kerberos realm for your configuration.
    4. In the Domain field, type the name of the Kerberos domain for your configuration.
  5. In the Keytab File section, click Choose File, select a saved keytab file, and then click Open.
  6. Click Upload.
Add an NFS mount

Before you begin

  • Configure any applicable Kerberos authentication before you add an NFS mount.
  • Either allow read/write access for all users on the share or assign the 'extrahop' user as the owner of the share and allow read/write access.
  • You must have NFS version 4.
  1. In the System Configuration section, click Datastore and Customizations.
  2. In the Extended Datastore Settings section, click Configure Extended Datastore.
  3. Click Add NFSv4 Mount.
  4. On the Configure NFSv4 Mount page, complete the following information:
    1. In the Mount Name field, type a name for the mount, such as EXDS.
    2. In the Remote Share Point field, type the path for the mount in the following format: host:/mountpoint, such as herring:/mnt/extended-datastore.
  5. From the Authentication drop-down, select from the following options:
    • None, For no authentication
    • Kerberos, For krb5 security.
    • Kerberos (Secure Auth and Data Integrity), for krb5i security.
    • Kerberos (Secure Auth, Data Integrity, Privacy), for krb5p security
  6. Click Save.
Specify a mount as an active extended datastore
After you add a CIFS or NFS mount, set the mount as your active extended datastore. Remember that only one datastore can collect metrics at a time.
Note:If you decide to store 5-minute and 1-hour metrics on the extended datastore, this option causes the appliance to migrate any 5-minute and 1-hour metrics that the appliance collected from the local ExtraHop system datastore to the extended datastore. Migrating 5-minute and 1-hour metrics to an extended datastore leaves more room to store 30-second metrics on the local datastore, which increases the amount of high-resolution lookback available.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Datastore and Customizations.
  3. In the Extended Datastore Settings section, click Configure Extended Datastore.
  4. From the Mount Name drop-down, select the name of the mount you want to specify as the extended datastore.
  5. In the Datastore Directory field, type a name for the datastore directory. The directory is automatically created on the mount point by the ExtraHop system.
  6. From the Configure as options, select the Active radio button.
  7. In the Datastore Size field, specify the maximum amount of data that can be stored on the datastore.
  8. Select the checkbox to store 5-minute and 1-hour metrics on the extended datastore. 24-hour metrics are always stored on the extended datastore.
  9. Specify whether to migrate existing metrics to the extended datastore by selecting from one of the following options.
    • To migrate existing metrics, click Move existing metrics to the extended datastore.
    • To retain existing metrics on the local datastore, click Keep existing metrics on the ExtraHop.
    Warning:While data is migrated, the ExtraHop system stops collecting data and system performance is degraded. The migration process takes more time under the following circumstances:
    • If there is a large amount of data to migrate
    • If the network connection to the NAS device hosting the datastore is slow
    • If the write performance of the NAS device hosting the datastore is slow
  10. Select Move existing.
  11. Specify what the system should do if the datastore becomes full by selecting from the following options.
    • To overwrite older data when the datastore becomes full, click Overwrite.
    • To stop storing new metrics on the extended datastore when the datastore becomes full, click Stop writing.
  12. Click Configure.
  13. After the storage is added, the Status displays Nominal.

Archive an extended datastore for read-only access

By disconnecting an active datastore from an ExtraHop system, you can create a read-only archive of the stored metrics data. Any number of ExtraHop systems can read from an archived datastore.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Datastore and Customizations.
  3. In the Extended Datastore Settings section, click Configure Extended Datastore.
  4. Click the name of the mount that contains the datastore you want to archive.
  5. In the row of that datastore, click Disconnect Extended Datastore.
  6. Type YES to confirm and then click OK.
The datastore is disconnected from the system and marked for read-only access. Wait at least ten minutes before connecting any other ExtraHop systems to the archive.
Connect your ExtraHop system to the archived datastore
Warning:To connect to an archived datastore, the ExtraHop system must scan through the data contained in the datastore. Depending on the amount of data stored in the archived datastore, connecting to the archived datastore might take a long time. When connecting to the archived datastore, the system does not collect data and system performance is degraded. The connection process takes more time under the following circumstances:
  • If there is a large amount of data in the datastore
  • If the network connection to the NAS device hosting the datastore is slow
  • If the read performance of the NAS device hosting the datastore is slow
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration, click Datastore and Customizations.
  3. In the Extended Datastore Settings section, click Configure Extended Datastore.
  4. Click the name of the mount that contains the archived datastore.
  5. In the Datastore Directory field, type the path of the archived datastore directory.
  6. Click Archive (Read Only).
  7. Click Configure.
Your extended database is now a read-only archive that can be accessed by multiple ExtraHop systems.

Import metrics from an extended datastore

If you stored metric data on an extended datastore that is connected to your ExtraHop system, you can move that data during an upgrade or datastore reset.

Contact ExtraHop Support if you need to transfer metrics from an extended datastore.

Reset the local datastore and remove all device metrics from the ExtraHop system

In certain circumstances, such as moving a sensor (Discover appliance) from one network to another, you might need to clear the metrics in the local and extended datastores. Resetting the local datastore removes all metrics, baselines, trend analyses, and discovered devices—and affects any customizations on your ExtraHop system.

Before you begin

Familiarize yourself with ExtraHop database concepts.
Customizations are changes that were made to the default settings on the system, such as triggers, dashboards, alerts, and custom metrics. These settings are stored in a file on the system, and this file is also deleted when the datastore is reset. Most customizations are applied to devices, which are identified by an ID on the system. When the local datastore is reset, those IDs might change and any device-based assignments must be re-assigned to the devices by their new IDs. The reset procedure includes an option to save and restore your customizations.

If your device IDs are stored on the extended datastore, and that datastore is disconnected when the local datastore is reset and then later reconnected, those device IDs are restored to the local datastore and you do not need to reassign your restored customizations.

Configured alerts are retained on the system, but they are disabled and must be enabled and reapplied to the correct network, device, or device group. System settings and user accounts are unaffected.

Warning:This procedure deletes device IDs and device metrics from the ExtraHop system.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Datastore and Customizations.
  3. Disconnect your extended datastore by completing the following steps:
    1. In the Extended Datastore Settings section, click Configure Extended Datastore.
    2. Click the name of the mount that contains the datastore you want to disconnect.
    3. In the row of that datastore, click Disconnect Extended Datastore.
    4. Type YES to confirm and then click OK.
  4. Navigate back to the Datastore and Customizations page.
  5. In the Local Datastore Settings section, click Reset Datastore.
  6. On the Reset Datastore page, specify whether to save customizations before you reset the datastore.
    • To retain the current customizations after the datastore is reset, select the Save Customizations checkbox.
    • To delete the current customizations after the datastore is reset, clear the Save Customizations checkbox.
  7. Type YES in the confirmation text box.
  8. Click Reset Datastore.
    If you opted to save your customizations, a prompt appears with a detailed list after about one minute. Click OK to restore the saved customizations.

Troubleshoot issues with the extended datastore

To view the status for your mounts and datastores, and identify applicable troubleshooting steps, complete the following steps.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Datastore and Customizations.
  3. In the Extended Datastore Settings section, click Configure Extended Datastore.
  4. In the Extended Datastores table, view the entry in the Status column for each mount or datastore. The following table provides guidance on each entry and identifies any applicable action.
Table 1. Mounts
Status Description User Action
Mounted The mount configuration was successful. None required
NOT MOUNTED The mount configuration was unsuccessful.
  • Verify that the mount configuration information for accuracy and correct spelling.
  • Verify that the remote system is available.
  • Verify that the server is a supported type and version.
  • Verify credentials, if using authentication.
NOT READABLE The mount has permissions or network-related issues that prevent reading.
  • Verify that the correct permissions are set on the share.
  • Verify the network connection and availability.
NO SPACE AVAILABLE The mount has no space remaining. Detach the mount and create a new one.
INSUFFICIENT SPACE
  • First appearance: The system anticipates that not enough space is available.
  • Second appearance: Less than 128MB of space is available.
Detach the mount and create a new one.
AVAILABLE SPACE WARNING Less than 1GB of space is available. Detach the mount and create a new one.
NOT WRITEABLE The mount has permissions or network-related issues that prevent writing.
  • Verify permissions.
  • Verify the network connection and availability.
Table 2. Datastores
Status Description User Action
Nominal The datastore is in a normal state. None required
INSUFFICIENT SPACE on: <MOUNT NAME> The datastore has insufficient space on the named mount and it cannot be written to. Create a new datastore. For the new datastore, consider selecting the Overwrite option, if appropriate.
NOT READABLE The datastore has permissions or network-related issues that prevent reading.
  • Verify permissions.
  • Verify the network connection and availability.
NOT WRITEABLE The datastore has permissions or network-related issues that prevent writing.
  • Verify permissions.
  • Verify the network connection and availability.

Inactive sources

Devices and applications appear in search results until they are inactive for over 90 days. If you want to remove sources from search results before the 90-day expiration, you can remove all sources that have been inactive between 1 and 90 days, on-demand.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. Type a value from 1 to 90 in the inactive days field.
  3. Click Remove.

Investigation Tracking

ExtraHop detections identify when unusual behavior is discovered on your network. Investigation tracking enables visual cues in the ExtraHop system that track how a detection is reviewed and resolved. You can track investigations with the ExtraHop system, or with a 3rd-party external ticketing system.

  • Select Track detection investigations with the ExtraHop system to update investigation status, assignee, and notes directly from a detection card in the ExtraHop system.
  • Select Track detection investigations with an external ticketing system to create tickets in a third-party ticket tracking system and link them to your ExtraHop detections. Linked tickets display the associated ticket status and ticket assignee in the detection.

    Optional: To create an HTML link from the detection to the ticket in your ticket tracking system, specify a URL template. Type the URL in the template field for your ticketing system and add the $ticket_id variable at the appropriate location. Type a complete URL, such as https://jira.example.com/browse/$ticket_id. The $ticket_id variable is replaced with the ticket ID associated with the detection.

    After the URL template is configured, you can click the ticket ID in a detection to open the ticket in a new browser tab.

While you can enable ticket tracking and configure a URL template through the Administration settings, ticket tracking requires further configuration through ExtraHop Triggers and the REST API. For more information about ticket tracking, see Configure ticket tracking for detections.

Note:You must enable ticket tracking on all connected Discover and Command appliances.

If you disable external ticket tracking by changing to investigation tracking with the ExtraHop system, previously stored status and assignee ticket information is converted to ExtraHop investigation tracking. You will be able to view tickets that already existed when you disabled external ticket tracking, but changes to that external ticket will not appear in the ExtraHop system.

Geomap Data Source

Geomaps and triggers reference a GeoIP database to identify the approximate location of an IP address.

Change the GeoIP database

You can upload your own GeoIP database to the ExtraHop system to ensure that you have the latest version of the database or if your database contains internal IP addresses that only you or your company know the location of.

You can upload a database file in MaxMind DB format (.mmdb) that include city-level details and country-level details.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Geomap Data Source.
  3. Click GeoIP Database.
  4. In the City-level Database section, select Upload New Database.
  5. Click Choose File and navigate to the new city-level database file on your computer.
  6. Click Save.

Next steps

For more information about geomaps, see the following resources:

Override an IP location

You can override missing or incorrect IP addresses that are in the GeoIP database. You can enter a comma-delimited list or tabbed list of overrides into the text box.

Each override must include an entry in the following seven columns:
  • IP address (a single IP address or CIDR notation)
  • Latitude
  • Longitude
  • City
  • State or region
  • Country name
  • ISO alpha-2 country code

You can edit and delete items as necessary, but you must ensure that there is data present for each of the seven columns. For more information about ISO country codes, refer to https://www.iso.org/obp/ui/#search and click Country Codes.

  1. Under System Configuration, click Geomap Data Source.
  2. Click IP Location Override.
  3. In the text box, type or paste a tab or comma-delimited list of overrides in the following format:
    IP address, latitude, longitude, city, state or region, country name, ISO
    alpha-2 country code

    For example:

    10.10.113.0/24, 38.907231, -77.036464, Washington, DC, United States, US
    10.10.225.25, 47.6204, -122.3491, Seattle, WA, United States, US
  4. Click Save.
To verify the change, go to the Geomaps interface and mouse over a location included in your IP location overrides.

Open Data Streams

By configuring an open data stream, you can send the data collected by your ExtraHop system to an external third-party system, such as syslog systems, MongoDB databases, HTTP servers, Kafka servers. In addition, you can send raw data to any external server by configuring the target with port and protocol specifications.

You can configure up to 16 open data stream targets of each external system type.

Important:After you configure an open data stream (ODS) for an external system, you must create a trigger that specifies what data to manage through the stream.

Similarly, if you delete an open data stream, you should also delete the associated trigger to avoid needlessly consuming system resources.

For more information, see Open data stream classes in the ExtraHop Trigger API Reference.

Configure an HTTP target for an open data stream

You can export data on an ExtraHop system to a remote HTTP server for long-term archiving and comparison with other sources.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin
    Repeat these steps on each Discover appliance in your environment.
  2. In the System Configuration section, click Open Data Streams.
  3. Click Add Target.
  4. From the Target Type drop-down menu, select HTTP.
  5. In the Name field, type a name to identify the target.
  6. In the Host field, type the hostname or IP address of the remote HTTP server.
  7. In the Port field, type the port number of the remote HTTP server.
  8. From the Type drop-down menu, select one of the following protocols:
    • HTTP
    • HTTPS
  9. If you selected HTTPS, select Skip certificate verification to bypass certificate verification of encrypted data. Data can be verified by trusted certificates that you upload to the ExtraHop system.
    Note:Secure connections to the HTTPS ODS server can be verified through trusted certificates that you upload to the ExtraHop system.
  10. Select Multiple connections to enable concurrent requests through multiple connections, which can improve throughput speed.
  11. In the Additional HTTP Header field, type an additional HTTP header.
    The format for the additional header is Header : Value.
    Note:Headers configured in a trigger take precedence over an additional header. For example, if the Additional HTTP Header field specifies Content-Type: text/plain but a trigger script for the same ODS target specifies Content-Type: application/json, then Content-Type: application/json is included in the HTTP request.
  12. (Optional): From the Authentication drop-down menu, select the type of authentication from the following options.
    Option Description
    Basic Authenticates through a username and password.
    Amazon AWS Authenticates through Amazon Web Services.
    Microsoft Azure Storage Authenticates through Microsoft Azure.
    Microsoft Azure Active Directory Authenticates through Microsoft Azure Active Directory (v1.0).
    Note:Microsoft identity platform (v2.0) is not supported.
    CrowdStrike Authenticates through CrowdStrike.
  13. (Optional): Click Test to establish a connection between the ExtraHop system and the remote HTTP server and send a test message to the server.
    The dialog box displays a message that indicates whether the connection succeeded or failed. If the test fails, edit the target configuration and test the connection again.
  14. (Optional): Send a test request to the remote HTTP server.
    The request is for testing purposes only; it is not included in any trigger scripts.
    1. From the Method drop-down menu, select one of the following HTTP request methods:
      • DELETE
      • GET
      • HEAD
      • OPTIONS
      • PUT
      • POST
      • TRACE
    2. In the Options field, specify the parameters of the HTTP request in the following format:
          "headers": {},
          "payload": "",
          "path": "/"
      }

      The parameters are defined as follows:

      headers
      The headers of the HTTP request. You must specify headers as an array, even if you specify only one header. For example:
      "headers": {"content-type":["application/json"]},
      path
      The path that the HTTP request will be applied to.
      payload
      The payload of the HTTP request.
    3. Click Test to establish a connection between the ExtraHop system and the remote server and send the request.
      The dialog box displays a message that indicates whether the request succeeded or failed, and displays any requested content.
  15. Click Save.

Next steps

Create a trigger that specifies what HTTP message data to send and initiates the transmission of data to the target. For more information, see the Remote.HTTP class in the ExtraHop Trigger API Reference.

Configure a Kafka target for an open data stream

You can export data on an ExtraHop system to any Kafka server for long-term archiving and comparison with other sources.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin
    Repeat these steps on each Discover appliance in your environment.
  2. In the System Configuration section, click Open Data Streams.
  3. Click Add Target.
  4. From the Target Type drop-down menu, select Kafka.
  5. In the Name field, type a name to identify the target.
  6. From the Compression drop-down list, select one of the following compression methods that will be applied to the transmitted data:
    • None
    • GZIP
    • Snappy
  7. From the Partition strategy drop-down list, select one of the following partitioning methods that will be applied to the transmitted data:
    • Default (Hash Key)
    • Manual
    • Random
    • Round Robin
  8. Specify at least one Kafka broker, also referred to as a node in a Kafka cluster, that can receive transmitted data.
    Note:You can add multiple brokers that are part of the same Kafka cluster to ensure connectivity in case a single broker is unavailable. All brokers must be part of the same cluster.
    1. In the Host field, type the hostname or IP address of the Kafka broker.
    2. In the Port field, type the port number of the Kafka broker.
    3. Click the plus (+) icon.
  9. (Optional): Click Test to establish a connection between the ExtraHop system and the remote Kafka server and send a test message to the server.
    The dialog box displays a message that indicates whether the connection succeeded or failed. If the test fails, edit the target configuration and test the connection again.
  10. Click Save.

Next steps

Create a trigger that specifies what Kafka message data to send and initiates the transmission of data to the target. For more information, see the Remote.Kafka class in the ExtraHop Trigger API Reference.

Configure a MongoDB target for an open data stream

You can export data on an ExtraHop system to any system that receives MongoDB input for long-term archiving and comparison with other sources.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin
    Repeat these steps on each Discover appliance in your environment.
  2. In the System Configuration section, click Open Data Streams.
  3. Click Add Target.
  4. From the Target Type drop-down menu, select MongoDB.
  5. In the Name field, type a name to identify the target.
  6. In the Host field, type the hostname or IP address of the remote MongoDB server.
  7. In the Port field, type the port number of the remote MongoDB server.
  8. Select SSL/TLS Encryption to encrypt transmitted data.
  9. Select Skip certificate verification to bypass certificate verification of encrypted data.
    Note:Secure connections to the MongoDB target server can be verified through trusted certificates that you upload to the ExtraHop system.
  10. (Optional): Add users that have permission to write to a MongoDB database on the target server.
    1. In the Database field, type the name of the MongoDB database.
    2. In the Username field, type the username of the user.
    3. In the Password field, type the password of the user.
    4. Click the plus (+) icon.
  11. (Optional): Click Test to establish a connection between the ExtraHop system and the remote MongoDB server and send a test message to the server.
    The dialog box displays a message that indicates whether the connection succeeded or failed. If the test fails, edit the target configuration and test the connection again.
  12. Click Save.

Next steps

Create a trigger that specifies what MongoDB message data to send and initiates the transmission of data to the target. For more information, see the Remote.MongoDB class in the ExtraHop Trigger API Reference.

Configure a raw data target for an open data stream

You can export raw data on an ExtraHop system to any server for long-term archiving and comparison with other sources. In addition, you can select an option to compress the data through GZIP.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin
    Repeat these steps on each Discover appliance in your environment.
  2. In the System Configuration section, click Open Data Streams.
  3. Click Add Target.
  4. From the Target Type drop-down menu, select Raw.
  5. In the Name field, type a name to identify the target.
  6. In the Host field, type hostname or IP address of the remote server.
  7. In the Port field, type the port number of the remote server.
  8. From the Protocol drop-down menu, select one of the following protocols over which to transmit data:
    • TCP
    • UDP
  9. (Optional): Enable GZIP compression of the transmitted data.
    1. Select GZIP compression.
    2. Provide a value for each of the following fields:
      Number of bytes after which to refresh GZIP
      The default value is 64000 bytes.
      Number of seconds after which to refresh GZIP
      The default value is 300 seconds.
  10. (Optional): Click Test to establish a connection between the ExtraHop system and the remote server and send a test message to the server.
    The dialog box displays a message that indicates whether the connection succeeded or failed. If the test fails, edit the target configuration and test the connection again.
  11. Click Save.

Next steps

Create a trigger that specifies what raw message data to send and initiates the transmission of data to the target. For more information, see the Remote.Raw class in the ExtraHop Trigger API Reference.

Configure a syslog target for an open data stream

You can export data on an ExtraHop system to any system that receives syslog input (such as Splunk, ArcSight, or Q1 Labs) for long-term archiving and comparison with other sources.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin
    Repeat these steps on each Discover appliance in your environment.
  2. In the System Configuration section, click Open Data Streams.
  3. Click Add Target.
  4. From the Target Type drop-down menu, select Syslog.
  5. In the Name field, type a name to identify the target.
  6. In the Host field, type the hostname or IP address of the remote syslog server.
  7. In the Port field, type the port number of the remote syslog server.
  8. From the Protocol drop-down menu, select one of the following protocols over which to transmit data:
    • TCP
    • UDP
    • SSL/TLS
  9. (Optional): Select Local Time to send syslog information with timestamps in the local time zone of the ExtraHop system. If this option is not selected, timestamps are sent in GMT.
  10. (Optional): Select Length-prefix framing to prepend the number of bytes in a message to the beginning of each message. If this option is not selected, the end of each message is delimited by a trailing newline.
  11. (Optional): In the Batch min bytes field, type the minimum number of bytes to send to the syslog server at a time.
  12. (Optional): In the Concurrent connections field, type the number of concurrent connections to send messages over.
  13. (Optional): If you selected the SSL/TLS protocol, specify certificate options.
    1. If the Syslog server requires client authentication, specify a TLS client certificate to send to the server in the Client certificate field.
    2. If you specified a client certificate, specify the private key of the certificate in the Client key field.
    3. If you do not want to verify the certificate of the Syslog server, select Skip server certificate verification.
    4. If you want to verify the certificate of the Syslog server, but the certificate has not been signed by a valid Certificate Authority (CA), specify trusted certificates to verify the server certificate with in the CA certificates (optional) field. Specify the certificates in PEM format. If this option is not specified, the server certificate is validated with the built-in list of valid CA certificates.
  14. (Optional): Click Test to establish a connection between the ExtraHop system and the remote syslog server and send a test message to the server.
    The dialog box displays a message that indicates whether the connection succeeded or failed. If the test fails, edit the target configuration and test the connection again.
  15. Click Save.

Next steps

Create a trigger that specifies what syslog message data to send and initiates the transmission of data to the target. For more information, see the Remote.Syslog class in the ExtraHop Trigger API Reference.

ODS Details

The Open Data Stream (ODS) details page provides information about the amount of data that has been sent to the ODS target and how many errors have occurred.

Note:The ODS Details page is currently available only for HTTP ODS targets.
Connection attempts
The number of times the ExtraHop system attempted to connect to the ODS target.
Connection errors
The number of errors that occurred during attempts to connect to the ODS target.
IPC errors
The number of errors that occurred during data transfer between triggers and the exremote process. If IPC errors occur, contact ExtraHop Support for help.
Bytes sent to target
The number of bytes that were forwarded by the exremote process to the ODS target.
Messages sent to target
The number of messages that were forwarded by the exremote process to the ODS target.
Bytes sent from triggers
The number of bytes that triggers sent to the exremote process to be forwarded to the ODS target.
Messages sent from triggers
The number of messages that triggers sent to the exremote process to be forwarded to the ODS target.
Messages dropped by exremote
The number of messages that triggers sent to the exremote process but were never forwarded to the ODS target.
Error Details
Time
The time that the error occurred.
URL
The URL of the ODS target.
Status
The HTTP status code returned by the ODS target.
Request Headers
The headers of the HTTP request sent to the ODS target.
Request Body
The body of the HTTP request sent to the ODS target.
Response Headers
The headers of the HTTP response sent by the ODS target.
Response Body
The body of the HTTP response sent by the ODS target.

Trend-based alerts are generated when a monitored metric deviates from the normal trends observed by the ExtraHop system. If needed, you can delete all configured trends and trend-based alerts.

  • Click Reset Trends to erase all trend data from the ExtraHop system.

Back up and restore a Discover or Command appliance

After you have configured your Command and Discover appliances with customizations such as bundles, triggers, and dashboards or administrative changes such as adding new users, ExtraHop recommends that you periodically back up your appliance settings to make it easier to recover from a system failure.

Daily backups are automatically saved to the local datastore, however, we recommend that you manually create a system backup prior to upgrading firmware or before making a major change in your environment (changing the data feed to the appliance, for example). Then, download the backup file and save it to a secure, off-appliance location.

Back up a Discover or Command appliance

Create a system backup and store the backup file to a secure location.

The following customizations and resources are saved when you create a backup.
  • User customizations such as bundles, triggers, and dashboards.
  • Configurations made from Administration settings, such as locally-created users and remote imported user groups, running configuration file settings, SSL certificates, and connections to Explore and Trace appliances.
The following customizations and resources are not saved when you create a backup or migrate to a new appliance.
  • License information for the system. If you are restoring settings to a new target appliance, you must manually license the new appliance.
  • Precision packet captures. You can download saved packet captures manually by following the steps in View and download packet captures.
  • When restoring a Command appliance that has a tunneled connection from a Discover appliance, the tunnel must be reestablished after the restore is complete and any customizations on the Command appliance for that Discover appliance must be manually recreated.
  • User-uploaded SSL keys for traffic decryption.
  • Secure keystore data, which contains passwords. If you are restoring a backup file to the same appliance that created the backup, and the keystore is intact, you do not need to re-enter credentials. However, if you are restoring a backup file to a new appliance or migrating to a new appliance, you must re-enter the following credentials:
    • Any SNMP community strings provided for SNMP polling of flow networks.
    • Any bind password provided to connect with LDAP for remote authentication purposes.
    • Any password provided to connect to an SMTP server where SMTP authentication is required.
    • Any password provided to connect to an external datastore.
    • Any password provided to access external resources through the configured global proxy.
    • Any password provided to access ExtraHop Cloud Services through the configured ExtraHop cloud proxy.
    • Any authentication credentials or keys provided to configure Open Data Stream targets.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Backup and Restore.
  3. Click Create System Backup, and then click OK.
    A list of user-saved and automatic backups appear.
  4. Click the name of the new backup file, User saved <timestamp> (new). The backup file, with an .exbk file extension, is automatically saved to the default download location for your browser.

Restore a Discover or Command appliance from a system backup

You can restore the ExtraHop system from the user-saved or automatic backups stored on the system. You can perform two types of restore operations; you can restore only customizations (changes to alerts, dashboards, triggers, custom metrics, for example), or you can restore both customizations and system resources.

This procedure describes the steps required to restore a backup file to the same appliance that created the backup file. If you want to migrate the settings to a new appliance, see Transfer settings to a new Command or Discover appliance.

Before you begin

The target appliance must be running a firmware version that is the same major and minor version as the firmware version that generated the backup file. If the major and minor firmware versions are not the same, the restore operation will fail.

The following table shows examples of supported restore operations.

Source appliance firmware Target appliance firmware Supported
7.7.0 7.7.5 Yes
7.7.0 7.8.0 No
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Backup and Restore.
  3. Click View or Restore System Backups.
  4. Click Restore next to the user backup or automatic backup that you want to restore.
  5. Select one of the following restore options:
    Option Description
    Restore system customizations Select this option if, for example, a dashboard was accidentally deleted or any other user setting needs to be restored. Any customizations that were made after the backup file was created are not overwritten when the customizations are restored.
    Restore system customizations and resources Select this option if you want to restore the system to the state it was in when the backup was created.
    Warning:Any customizations that were made after the backup file was created are overwritten when the customizations and resources are restored.
  6. Click OK.
  7. (Optional): If you selected Restore system customizations, click View import log to see which customizations were restored.
  8. Restart the system.
    1. Return to Administration settings.
    2. In the Appliance Settings section, click Shutdown or Restart.
    3. In the Actions column for the System entry, click Restart.
    4. Click Restart to confirm.

Restore a Discover or Command appliance from a backup file

This procedure describes the steps required to restore a system from a backup file to the same appliance that created the backup file.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Backup and Restore.
  3. Click Upload Backup File to Restore System.
  4. Select one of the following restore options:
    Option Description
    Restore system customizations Select this option if, for example, a dashboard was accidentally deleted or any other user setting needs to be restored. Any customizations that were made after the backup file was created are not overwritten when the customizations are restored.
    Restore system customizations and resources Select this option if you want to restore the system to the state it was in when the backup was created.
    Warning:Any customizations that were made after the backup file was created are overwritten when the customizations and resources are restored.
  5. Click Choose File and navigate to a backup file that you saved previously.
  6. Click Restore.
  7. (Optional): If you selected Restore system customizations, click View import log to see which customizations were restored.
  8. Restart the system.
    1. Return to Administration settings.
    2. In the Appliance Settings section, click Shutdown or Restart.
    3. In the Actions column for the System entry, click Restart.
    4. Click Restart to confirm.

Transfer settings to a new Command or Discover appliance

This procedure describes the steps required to restore a backup file to a new Command or Discover appliance. Only system settings from your existing Discover or Command appliance to a new appliance are transferred. Metrics on the local datastore are not transferred.

Before you begin

  • Create a system backup and save the backup file to a secure location.
  • Remove the source appliance from the network before transferring settings. The target and source appliance cannot be active on the network at the same time.
    Important:Do not disconnect any Discover appliances that are already connected to a Command appliance.
  • Deploy and register the target appliance.
    • Ensure that the target appliance is the same type of appliance, physical or virtual, as the source appliance.
    • Ensure that the target appliance is the same size or larger (maximum throughput on the Discover appliance; CPU, RAM, and disk capacity on the Command appliance) as the source appliance.
    • Ensure that the target appliance is running a firmware version that is the same major and minor version as the firmware version that generated the backup file. If the major and minor firmware versions are not the same, the restore operation will fail.

      The following table shows examples of supported configurations.

      Source appliance firmware Target appliance firmware Supported
      7.7.0 7.7.0 Yes
      7.7.0 7.7.5 Yes
      7.7.5 7.7.0 No
      7.7.0 7.6.0 No
      7.7.0 7.8.0 No
  • After transferring settings to a target Command appliance, you must manually reconnect all Discover appliances
  • When transferring settings to a target Command appliance that is configured for a tunneled connection to the Discover appliances, we recommend that you configure the target Command appliance with the same hostname and IP address as the source Command appliance.
  1. Log in to the Administration settings on the target system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the System Configuration section, click Backup and Restore.
  3. Click Upload Backup File to Restore System.
  4. Select Restore system customizations and resources.
  5. Click Choose File, navigate to the stored backup file, and then click Open.
  6. Click Restore.
    Warning:If the backup file is incompatible with the local datastore, the datastore must be reset.
    After the restore is complete, you are logged out of the system.
  7. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin and verify that your customizations were correctly restored on the target appliance .
    Note:If the source appliance was connected to ExtraHop Cloud Services, you must manually connect the target appliance to ExtraHop Cloud Services.
Reconnect Discover appliances to the Command appliance
If you transferred settings to a new Command appliance, you must manually reconnect all previously connected Discover appliances.

Before you begin

Important:If your Command and Discover appliances are configured for a tunneled connection, we recommend that you configure the source and target Command appliances with the same IP address and hostname. If you cannot set the same IP address and hostname, skip this procedure and create a new tunneled connection to the new IP address or hostname of the Command appliance.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Connected Appliance Administration section, under ExtraHop Discover Settings, click Manage Discover Appliances.
  3. In the Actions column for the first Discover appliance, click Reconnect.


  4. Type the password for the setup user of the Discover appliance.
  5. Click Connect.
  6. Repeat steps 3-5 for any remaining disconnected Discover appliances.
    All disconnected Discover appliances are now online.

Appliance Settings

You can configure the following components of the ExtraHop appliance in the Appliance Settings section.

All appliances have the following components:

Running Config
Download and modify the running configuration file.
Services
Enable or disable the Web Shell, management GUI, SNMP service, SSH access, and SSL session key receiver. The SSL Session Key Receiver option appears only on the Discover appliance.
Firmware
Upgrade the ExtraHop system firmware.
System Time
Configure the system time.
Shutdown or Restart
Halt and restart system services.
License
Update the license to enable add-on modules.
Disks
Provides information about the disks in the appliance.

The following components only appear on the specified appliances:

Command Nickname
Assign a nickname to the Command appliance. This setting is available only on the Command appliance.
Reset Packetstore
Delete all packets stored on the ExtraHop Trace appliance. The Reset Packetstore page appears only on the Trace appliance.

Running Config

The running configuration file specifies the default system configuration. When you modify system settings, you must save the running configuration file to preserve those modifications after a system restart.

Note:Making configuration changes to the code from the Edit page is not recommended. You can make most system modifications through other pages in the Administration settings.

Save system settings to the running config file

When you modify any of the system configuration settings on an ExtraHop system, you must confirm the updates by saving the running config file. If you do not save the settings, the changes are lost when your ExtraHop system restarts.

To remind you that the running configuration has changed, (Unsaved changes) appears next to the Running Config link on the main Administration settings page, as well as a View and Save Changes button on all Administration settings pages, as shown in the figure below.

  1. Click View and Save Changes.
  2. Review the comparison between the old running config and the current running config (not yet saved) and then select from the following options:
    • If the changes are correct, click Save.
    • If the changes are not correct, click Cancel and then revert the changes by clicking Revert config.

Edit the running config

The ExtraHop Administration settings provide an interface to view and modify the code that specifies the default system configuration. In addition to making changes to the running configuration through the Administration settings, changes can also be made on the Running Config page.

Note:Making configuration changes to the code from the Edit page is not recommended. You can make most system modifications through other Administration settings.

Download the running config as a text file

You can download the Running Config settings to your workstation in text file format. You can open this text file and make changes to it locally, before copying those changes into the Running Config window.

  1. Click Running Config.
  2. Click Download config as a File.
The current running configuration is downloaded as a text file to your default download location.

Disable ICMPv6 Destination Unreachable messages

You can prevent the ExtraHop system from generating ICMPv6 Destination Unreachable messages. You might want to disable ICMPv6 Destination Unreachable messages for security reasons per RFC 4443.

To disable ICMPv6 Destination Unreachable messages, you must edit the Running Configuration. However, we recommend that you do not manually edit the Running Configuration file without direction from ExtraHop Support. Manually editing the running config file incorrectly might cause the system to become unavailable or stop collecting data. You can contact ExtraHop Support at support@extrahop.com.

Disable specific ICMPv6 Echo Reply messages

You can prevent the ExtraHop system from generating Echo Reply messages in response to ICMPv6 Echo Request messages that are sent to an IPv6 multicast or anycast address. You might want to disable these messages to reduce unnecessary network traffic.

To disable specific ICMPv6 Echo Reply messages, you must edit the Running Configuration. However, we recommend that you do not manually edit the Running Configuration file without direction from ExtraHop Support. Manually editing the running config file incorrectly might cause the system to become unavailable or stop collecting data. You can contact ExtraHop Support at support@extrahop.com.

Services

These services run in the background and perform functions that do not require user input. These services can be started and stopped through the Administration settings.

Enable or disable the Web Shell
The Web Shell provides access to the ExtraHop command-line interface (CLI). By default this service is enabled so that ExtraHop users can click the Launch Shell link in the upper right corner of the Administration settings and type commands. For more information, see the ExtraHop Command-line Reference.
Enable or disable the Management GUI
The Management GUI provides browser-based access to the ExtraHop system. By default, this service is enabled so that ExtraHop users can access the ExtraHop system through a web browser. If this service is disabled, the Apache Web Server session is terminated and all browser-based access is disabled.
Warning:Do not disable this service unless you are an experienced ExtraHop administrator and you are familiar with the ExtraHop CLI.
Enable or disable the SNMP Service
Enable the SNMP service on the ExtraHop system when you want your network device monitoring software to collect information about the ExtraHop system. This service is disabled by default.
  • Enable the SNMP service from the Services page by selecting the Disabled checkbox and then clicking Save. After the page refreshes, the Enabled checkbox appears.
  • Configure the SNMP service and download the ExtraHop MIB file
Enable or disable SSH Access
SSH access is enabled by default to enable users to securely log in to the ExtraHop command-line interface (CLI).
Note:The SSH Service and the Management GUI Service cannot be disabled at the same time. At least one of these services must be enabled to provide access to the system.
Enable or disable the SSL Session Key Receiver (Discover appliance only)
You must enable the session key receiver service through the Administration settings before the ExtraHop system can receive and decrypt session keys from the session key forwarder. By default, this service is disabled.
Note:If you do not see this checkbox, and you have purchased the SSL Decryption license, contact ExtraHop Support to update your license.

Configure the SNMP service

Configure the SNMP service on your ExtraHop system so that you can configure your network device monitoring software to collect information about your ExtraHop system through the Simple Network Management Protocol (SNMP). For example, you can configure your monitoring software to determine how much free space is available on an ExtraHop system and send an alert if the system is over 95% full. Import the ExtraHop SNMP MIB file into your monitoring software to monitor all ExtraHop-specific SNMP objects.

  1. On the Services page, next to SNMP Service, click Configure.
  2. On the SNMP Service Configuration page, complete the following steps:
    Enabled
    Select the checkbox to enable the SNMP service.
    SNMP Community
    Type a friendly name for the SNMP community.
    SNMP System Contact
    Type a valid name or email address for the SNMP system contact.
    SNMP System Location
    Type a location for the SNMP system.
  3. Click Save Settings.

Next steps

Download the ExtraHop MIB file from the SNMP Service Configuration page.

Firmware

The Administration settings provide an interface to upload and delete the firmware on ExtraHop appliances. The firmware file must be accessible from the computer where you will perform the upgrade.

Before you begin

Be sure to read the release notes for the firmware version that you want to install. Release notes contain upgrade guidance as well as known issues that might affect critical workflows in your organization.

Upgrade the firmware on your ExtraHop system

The following procedure shows you how to upgrade your ExtraHop system to the latest firmware release. While the firmware upgrade process is similar across all ExtraHop appliances, some appliances have additional considerations or steps that you must address before you install the firmware in your environment. If you need assistance with your upgrade, contact ExtraHop Support.

Pre-upgrade checklist

Here are some important considerations and requirements about upgrading ExtraHop appliances.

  • If you have multiple types of ExtraHop appliances, you must upgrade them in the following order:
    1. Command appliance
    2. Discover appliances
    3. Explore appliances
    4. Trace appliances
  • If you have a Command appliance, apply the following guidance:
    • For large Command appliance deployments (managing 50,000 devices or more), reserve a minimum of one hour to perform the upgrade.
    • The Command appliance firmware version must be greater than or equal to the firmware version of all connected appliances.
  • If you have Explore appliances, apply the following guidance:
    • Do not upgrade Explore appliances to a firmware version that is newer than the version installed on connected Command and Discover appliances.
    • After upgrading the Command and Discover appliances, halt the ingest of records from the Command and Discover appliances before upgrading the Explore appliance. If you are upgrading from a firmware version prior to 7.4, temporarily remove any connected Explore appliances, or alternatively, disable triggers that commit records and disable the automatic flow records setting. If you are upgrading from firmware version 7.4 or later, after upgrading the Command Discover appliances disable record ingest on the Explore cluster before upgrading the Explore appliance.

      You must re-enable these settings after all nodes in the Explore cluster are upgraded.

    • You must upgrade all Explore nodes in an Explore cluster. The cluster will not function correctly if nodes are on dissimilar firmware versions.
      Important:The message Could not determine ingest status on some nodes and Error appear on the Cluster Data Management page in the Administration settings of the upgraded nodes until all nodes in the cluster are upgraded. These errors are expected and can be ignored.
    • You must enable shard reallocation from the Cluster Data Management page the Administration settings after all nodes in the Explore cluster are upgraded.
  • If you have Trace appliances, apply the following guidance:
    • Do not upgrade Trace appliances to a firmware version that is newer than the version installed on connected Command and Discover appliances.
Upgrade the firmware
  1. Download the firmware for the appliance from the ExtraHop Customer Portal to your computer.
  2. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  3. In the Appliance Settings section, click Firmware.
  4. Click Upgrade.
  5. On the Upgrade Firmware page, select one of the following options:
    • To upload firmware from a file, click Choose File, navigate to the .tar file you want to upload, and click Open.
    • To upload firmware from a URL, click retrieve from URL instead and then type the URL in the Firmware URL field.
  6. If you do not want to automatically restart the appliance after the firmware is installed, clear the Automatically restart appliance after installation checkbox.
  7. Click Upgrade.
    The ExtraHop system initiates the firmware upgrade. You can monitor the progress of the upgrade with the Updating progress bar. The appliance restarts after the firmware is installed.
  8. If you did not choose to automatically restart the appliance, click Reboot to restart the system.
    After the firmware update is installed successfully, the ExtraHop appliance displays the version number of the new firmware on the Administration settings.
    Note:Your browser might time out after 5 minutes of inactivity. Refresh the browser page if the update appears incomplete.

    If the browser session times out before the ExtraHop system is able to complete the update process, you can try the following connectivity tests to confirm the status up the upgrade process:

    • Ping the appliance from the command line of another appliance or client workstation.
    • From the Administration settings on a Command appliance, view the appliance status on the Manage Connected Appliances page.
    • Connect to the appliance through the iDRAC interface.
  9. If you disconnected any Explore appliances from Command and Discover appliances, make sure to reconnect them. If you disabled any triggers, automatic flow records, or disabled record ingest, make sure to re-enable those settings.

System Time

The System Time page displays the current configuration and the status of all configured NTP servers. When capturing data, it is helpful to have the time on the ExtraHop appliance match the local time of the router. The ExtraHop appliance can set time locally or synchronize time with a time server. By default, system time is set locally, but we recommend that you change this setting and set time through a time server.

  • Configure the system time.
  • View information about the appliance settings in the System Time section:
    Time Zone
    Displays the currently selected time zone
    System Time
    Displays the current system time.
    Time Servers
    Displays a comma-separated list of configured time servers.
  • View information for each configured NTP server in the NTP Status table:
    remote
    The host name or IP address of the remote NTP server you have configured to synchronize with.
    st
    The stratum level, 0 through 16.
    t
    The type of connection. This value can be u for unicast or manycast, b for broadcast or multicast, l for local reference clock, s for symmetric peer, A for a manycast server, B for a broadcast server, or M for a multicast server.
    when
    The last time when the server was queried for the time. The default value is seconds, or m is displayed for minutes, h for hours, and d for days.
    poll
    How often the server is queried for the time, with a minimum of 16 seconds to a maximum of 36 hours.
    reach
    Value that shows the success and failure rate of communicating with the remote server. Success means the bit is set, failure means the bit is not set. 377 is the highest value.
    delay
    The round trip time (RTT) of the ExtraHop appliance communicating with the remote server, in milliseconds.
    offset
    Indicates how far off the ExtraHop appliance clock is from the reported time the server gave you. The value can be positive or negative, displayed in milliseconds.
    jitter
    Indicates the difference, in milliseconds, between two samples.

Configure the system time

By default, the ExtraHop system synchronizes the system time through the *.extrahop.pool.ntp.org network time protocol (NTP) servers. If your network environment prevents the ExtraHop system from communicating with these time servers, you must configure an alternate time server source.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Appliance Settings section, click System Time.
  3. Click Configure Time.
  4. Select your time zone from the drop-down list then click Save and Continue.
  5. On the Time Setup page, select one of the following options:
    • Set time manually
      Note:You cannot manually set the time for systems that are managed by a Command appliance or Reveal(x) 360.
    • Set time with NTP server
  6. Select Set time with NTP server and then click Select.
    The ExtraHop time servers, 0.extrahop.pool.ntp.org, 1.extrahop.pool.ntp.org, 2.extrahop.pool.ntp.org, and 3.extrahop.pool.ntp.org appear in the first four Time Server fields by default.
  7. Type the IP address or fully qualified domain name (FQDN) for the time servers in the Time Server fields. You can have up to nine time servers.
    Tip:After adding the fifth time server, click Add Server to display up to four additional timer server fields.
  8. Click Done.

The NTP Status table displays a list of NTP servers that keep the system clock in sync. To sync the current system time a remote server, click the Sync Now button.

Shutdown or Restart

The Administration settings provides an interface to halt, shutdown, and restart the ExtraHop system and its system components. For each ExtraHop system component, the table includes a time stamp to show the start time.

  • Restart or shutdown System to pause or shut down and restart the ExtraHop system.
  • Restart Bridge Status (Discover appliance only) to restart the ExtraHop bridge component.
  • Restart Capture (Discover appliance only) to restart the ExtraHop capture component.
  • Restart Portal Status to restart the ExtraHop web portal.
  • Restart Scheduled Reports (Command appliance only) to restart the ExtraHop scheduled reports component.

Appliance Migration

You can migrate your stored metrics, customizations and system resources on your existing physical Discover appliance to a new Discover appliance.

Help on this page

Migrate a Discover appliance

When you are ready to upgrade your existing Discover appliance, you can easily migrate to new hardware without losing business critical metrics and time-consuming system configurations.

The following customizations and resources are not saved when you create a backup or migrate to a new appliance.
  • License information for the system. If you are restoring settings to a new target appliance, you must manually license the new appliance.
  • Precision packet captures. You can download saved packet captures manually by following the steps in View and download packet captures.
  • When restoring a Command appliance that has a tunneled connection from a Discover appliance, the tunnel must be reestablished after the restore is complete and any customizations on the Command appliance for that Discover appliance must be manually recreated.
  • User-uploaded SSL keys for traffic decryption.
  • Secure keystore data, which contains passwords. If you are restoring a backup file to the same appliance that created the backup, and the keystore is intact, you do not need to re-enter credentials. However, if you are restoring a backup file to a new appliance or migrating to a new appliance, you must re-enter the following credentials:
    • Any SNMP community strings provided for SNMP polling of flow networks.
    • Any bind password provided to connect with LDAP for remote authentication purposes.
    • Any password provided to connect to an SMTP server where SMTP authentication is required.
    • Any password provided to connect to an external datastore.
    • Any password provided to access external resources through the configured global proxy.
    • Any password provided to access ExtraHop Cloud Services through the configured ExtraHop cloud proxy.
    • Any authentication credentials or keys provided to configure Open Data Stream targets.
Before you begin
Important:If the source appliance has an external datastore and the datastore is configured on a CIFS/SMB server requiring password authentication, contact ExtraHop Support to assist you with your migration.
  • Source and target appliances must be running the same firmware version.
  • Migrate only to same-edition appliances, such as Reveal(x). If you need to migrate between editions, contact your ExtraHop sales team for assistance.
  • Migration is only supported between physical appliances. Virtual appliance migrations are not supported.
  • Supported migration paths are listed in the following tables.
Table 3. Reveal(x) Compatibility Matrix
Source Appliance Target Appliance
  EDA 1200 EDA 4200 EDA 6200 EDA 8200 EDA 9200 EDA 10200
EDA 1200 YES YES YES YES YES YES
EDA 6200 NO NO YES* YES YES YES
EDA 8200 NO NO NO YES* YES* YES
EDA 9200 NO NO NO NO YES* YES
EDA 10200 NO NO NO NO NO YES*

*Migration is supported only if the source and target appliance were manufactured in May 2019 or later. Contact ExtraHop Support to verify compatibility.

Table 4. Performance Edition Compatibility Matrix
Source Appliance Target Appliance
  EDA 6200 EDA 8200 EDA 9200 EDA 10200
EH3000 YES YES YES YES
EH6000 YES YES YES YES
EH8000 NO YES YES YES
EDA 1100 YES YES YES YES
EDA 3100 YES YES YES YES
EDA 6100 YES YES YES YES
EDA 8100 NO YES YES YES
EDA 9100 NO NO YES YES
EDA 6200 YES* YES YES YES
EDA 8200 NO YES* YES* YES
EDA 9200 NO NO YES* YES
EDA 10200 NO NO NO YES*

*Migration is supported only if the source and target appliance were manufactured in May 2019 or later. Contact ExtraHop Support to verify compatibility.

Prepare the source and target appliances
  1. Follow the instructions in the deployment guide for your appliance model to deploy the target appliance.
  2. Register the target appliance.
  3. Make sure that the target and the source appliance are running the exact same firmware version. You can download current and previous firmware from the ExtraHop Customer Portal.
  4. Choose one of the following networking methods to migrate to the target appliance.
    • (Recommended) To complete the migration in the fastest time possible, directly connect the appliances with 10G management interfaces.
    • Create a bond interface (optional) of available 1G management interfaces. With the appropriate network cables, directly connect the available port or ports on the source appliance to similar ports on the target appliance. The figure below shows an example configuration with bonded 1G interfaces.

      Important:Make sure that your IP address and subnet configuration on both appliances route management traffic to your management workstation and migration traffic to the direct link.
    • Migrate the appliance over your existing network. The source and target appliance must be able to communicate with each other over your network. Note that migration might take significantly longer with this configuration.
Create a bond interface (optional)

Follow the instructions below to bond 1G interfaces. Creating a bond interface decreases the amount of time it takes to complete the migration over 1G interfaces.

  1. In the Network Settings section on the source appliance, click Connectivity.
  2. In the Bond Interface Settings section, click Create Bond Interface.
  3. In the Members section, Select the members of the bond interface depending on the appliance type. Do not include the current management interface, typically interface 1 or interface 3, in the bond interface.
  4. From the Take Settings From drop-down list, select one of the members of the new bond interface.
  5. For Bond Type, select Static.
  6. Click Create.
  7. On the Connectivity page, in the Bond Interfaces section, click Bond Interface 1.
  8. From the Interface Mode drop-down menu, select Management Port.
  9. Type the IPv4 Address, Netmask, and Gateway for your migration network.
  10. Click Save.
  11. Repeat this procedure on the Target appliance.
Start the migration

Migration can take several hours to complete. During this time, neither the source nor the target appliance can collect data. The migration process cannot be paused or canceled.

  1. Log in to the Administration settings on the source Discover appliance.
  2. In the Network Settings section, click Connectivity.
  3. Write down the IP address of the management interface, DNS servers, and any static routes. You will configure these settings on the target appliance after the migration completes.
  4. In the Appliance Settings section, click Appliance Migration.
  5. In the Target Appliance field, type the IP address of the interface you configured for migration on the target appliance.
  6. In the Setup User Password field, type the password of the setup user on the target appliance. The default password is the system serial number of the target appliance.
  7. Click Continue.
  8. On the Confirm Fingerprint page, make sure that the fingerprint that appears on this page exactly matches the fingerprint that appears on the Fingerprint page in the Administration settings on the target appliance. If the fingerprints do not match, make sure that you specified the correct hostname or IP address of the target appliance that you entered in step 5.
  9. Click Start Migration.
    Wait for the migration success message to appear, which can take several hours. During the migration, the ExtraHop system on the target appliance is inaccessible. If you inadvertently close the Appliance Migration Status page on the source appliance, you can return to https://<source hostname>/admin/appliance_migration_status/ to continue monitoring the migration.

    If the migration fails for any reason, restart the migration. If the migration continues to fail, contact ExtraHop Support for assistance.

    Note:The target appliance automatically reboots after the migration completes.
  10. Click Shut Down to power off the source appliance.
    Important:To prevent appliance ID conflicts, do not power on the source appliance while it is connected to the same network where the target appliance is located unless you reset the appliance through the ExtraHop Rescue Media.
Configure the target appliance

If appliance networking is not configured through DHCP, make sure connectivity settings are updated, including any assigned IP addresses, DNS servers, and static routes. Connections to Command, Explore, and Trace appliances on the source appliance are automatically established on the target appliance when network settings are configured.

  1. Log in to the Administration settings on the target appliance.
  2. In the Network Settings section, click Connectivity.
  3. In the Interfaces section, click the management interface (typically interface 1 or interface 3, depending on the appliance type).
  4. Type the IP address of the source appliance in the IPv4 Address field.
  5. If static routes were configured on the source appliance, click Edit Routes, add any required route information, and then click Save.
  6. Click Save to save the interface settings.
  7. If you had to change any interface settings to perform the migration with bonded interfaces, make sure that the interface modes are configured as you expect them to be.
  8. Restore any additional settings that are not automatically restored.

License

The License Administration page enables you to view and manage licenses for your ExtraHop system. You must have an active license to access the ExtraHop system, and your system must be able to connect to the ExtraHop licensing server for periodic updates and check-ins about your license status.

To learn more about ExtraHop licenses, see the License FAQ.

Register your ExtraHop system

This guide provides instructions on how to apply a new product key and activate all of your purchased modules. You must have privileges on the ExtraHop system to access the Administration settings.

Register the appliance

Before you begin

Note:If you are registering a Discover or Command appliance, you can optionally enter the product key after you accept the EULA and log in to the ExtraHop system (https://<extrahop_ip_address>/).
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. Review the license agreement, select I Agree, and then click Submit.
  3. On the login screen, type setup for the username.
  4. For the password, select from the following options:
    • For 1U and 2U appliances, type the serial number printed on the label on the back of the appliance. The serial number can also be found on the LCD display on the front of the appliance in the Info section.
    • For the EDA 1100, type the serial number displayed in the Appliance info section of the LCD menu. The serial number is also printed on the bottom of the appliance.
    • For the EDA 1200, type the serial number printed on the back of the appliance.
    • For a virtual appliance in AWS, type the instance ID, which is the string of characters that follow i- (but not i- itself).
    • For a virtual appliance in GCP, type the instance ID.
    • For all other virtual appliances, type default.
  5. Click Log In.
  6. In the Appliance Settings section, click License.
  7. Click Manage License.
  8. If you have a product key, click Register and type your product key into the field.
    Note:If you received a license file from ExtraHop Support, click Manage License, click Update, then paste the contents of the file into the Enter License field. Click Update.
  9. Click Register.

Next steps

Have more questions about ExtraHop licensing works? See the License FAQ.
Troubleshoot license server connectivity

For ExtraHop systems licensed and configured to connect to ExtraHop Cloud Services, registration and verification is performed through an HTTPS request to ExtraHop Cloud Services.

If your ExtraHop system is not licensed for ExtraHop Cloud Services, or is not yet licensed, the system attempts to register the system through an HTTPS request to all ExtraHop Cloud Services regions. If this request fails, the system tries to connect to the ExtraHop licensing server through DNS server port 53. The following procedure is useful to verify that the ExtraHop system can communicate with the licensing server through DNS.

Open a terminal application on your Windows, Linux, or Mac OS client that is on the same network as your ExtraHop system and run the following command:
nslookup -type=NS d.extrahop.com
If the name resolution is successful, output similar to the following appears:
Non-authoritative answer:
d.extrahop.com  nameserver = ns0.use.d.extrahop.com.
d.extrahop.com  nameserver = ns0.usw.d.extrahop.com.
If the name resolution is not successful, make sure that your DNS server is properly configured to lookup the
extrahop.com domain.

Apply an updated license

When you purchase a new protocol module, service, or feature, the updated license is automatically available on the ExtraHop system. However you must apply the updated license to the system through the Administration settings for the new changes to take effect.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Appliance Settings section, click License. A message appears about the availability of your new license, as shown in the following figure.


  3. Click Apply new license. The capture process restarts, which might take a few minutes.
    Note:If your license is not automatically updated, troubleshoot licensing server connectivity or contact ExtraHop Support.

Update a license

If ExtraHop Support provides you with a license file, you can install this file on your appliance to update the license.

Note:If you want to update the product key for your appliance, you must register your ExtraHop system.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Appliance Settings section, click License.
  3. Click Manage License.
  4. Click Update.
  5. In the Enter License text box, enter the licensing information for the module.
    Paste the license text provided to you by ExtraHop Support. Be sure to include all of the text, including the BEGIN and END lines, as shown in the example below:
    -----BEGIN EXTRAHOP LICENSE-----
    serial=ABC123D;
    dossier=1234567890abcdef1234567890abcdef;
    mod_cifs=1;
    mod_nfs=1;
    mod_amf=0;
    live_capture=1;
    capture_upload=1;
    ...
    ssl_decryption=0;
    +++;
    ABCabcDE/FGHIjklm12nopqrstuvwXYZAB12345678abcde901abCD;
    12ABCDEFG1HIJklmnOP+1aA=;
    =abcd;
    -----END EXTRAHOP LICENSE-----
  6. Click Update.

Disks

The Disks page displays a map of the drives on the ExtraHop system and lists their statuses. This information can help you determine whether drives need to be installed or replaced. Automatic system health checks and email notifications (if enabled) can provide timely notice about a disk that is in a degraded state. System health checks display disk errors at the top of the Settings page.

For information about configuring and repairing RAID10 functionality on the EDA 6100 and EDA 6200 appliances, see Upgrade from RAID 0 to RAID 10.

For help replacing a RAID 0 disk or installing an SSD drive, refer to the instructions below. The RAID 0 instructions apply to the following types of disks:

  • Datastore
  • Packet Capture
  • Firmware

Do not attempt to install or replace the drive in Slot 0 unless instructed by ExtraHop Support.

Note:Ensure that your device has a RAID controller before attempting the following procedure. If unsure, contact ExtraHop Support at support@extrahop.com. This procedure configures the EDA 5000 appliance as an example. A persistently damaged disk might not be replaceable with this procedure.

Replace a RAID 0 disk

  1. In the system health email notification, note which machine has the problematic disk.
  2. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  3. In the Appliance Settings section, click Disks.
  4. Under the section for the disk type (for example, Datastore), find the problematic disk and note the slot number.

    Click RAID Disk Details to display more details.

  5. Remove the disk from
  6. Insert an identical disk into an available slot.
    The system detects the new disk and adds a new row (Disk Error Action) with a link to replace the bad disk.
  7. Verify the new disk information:
    • Under Unused Disks on the Disk Details page, verify that the new disk is the same size, speed, and type as the disk being replaced.
    • Mouse over the old and new disks in the Drive Map. The new disk displays the message "Unconfigured(good), Spun Up."

  8. Under the section for the disk type, click Replace with Disk in slot #n in the Disk Error Action row.

    The data begins copying over. The Copy Status row displays the progress. Mousing over the disk in the Drive Map shows the status.

  9. After copying is complete, make sure that the copy process was successful:
    • Settings button and Settings page no longer display error messages.
    • Disk page shows the old disk under the Unused Disk section
  10. Remove the old disk.

    The Drive Map now shows the new disk in green.

Install a new packet capture disk

  1. In the Appliance Settings section, click Disks.
    If the Drive Map shows the slot where the SSD is installed in red, you must replace the SSD.
  2. Insert the SSD drive into the slot where the previous SSD was installed and wait for the LED on the drive to turn green.
  3. In the Administration settings, refresh the browser.

    The Drive Map shows the SSD slot in yellow because the drive is not configured.

  4. Next to SSD Assisted Packet Capture, click Enable.
  5. Click OK to add the packet capture drive.

    The page refreshes and the Drive Map shows the SSD as green and the Status changes to Online, Spun Up.



Tip:If the SSD drive is dislodged and reinserted, you can re-enable it. This process requires reformatting the disk, which erases all data.

Command Nickname

By default, your Command appliance is identified by its hostname on connected Discover appliances. However, you can optionally configure a custom name to identify your Command appliance.

Choose from the following options to configure the display name for your Command appliance:

  • Select Display custom nickname and type the name in the field you want to display for this Command appliance.
  • Select Display hostname to display the hostname configured for this Command appliance.

Configure packet capture

Packet capture enables you to collect, store, and retrieve data packets from your network traffic. You can download a packet capture file for analysis in a third-party tool, such as Wireshark. Packets can be inspected to diagnose and resolve network problems and to verify that security policies are being followed.

By adding a packet capture disk to the Discover appliance, you can store the raw payload data sent to your ExtraHop system. This disk can be added to your virtual appliance or an SSD that is installed in your physical appliance.

These instructions only apply to ExtraHop systems that have a precision packet capture disk. To store packets on an ExtraHop Trace appliance, see deployment guides.

Enable packet capture

Your ExtraHop system must be licensed for packet capture and be configured with a dedicated SSD storage disk for a physical appliance or a disk configured on your hypervisor for a virtual appliance.

Before you begin

  • Verify that your ExtraHop system is licensed for Packet Capture by logging in to the Administration settings and clicking License. Packet Capture is listed under Features and Enabled should appear.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Appliance Settings section, click Disks.
  3. Depending on your appliance type and menu options, configure the following settings.
    • For physical appliances click Enable next to SSD Assisted Packet Capture, and then click OK.
    • For virtual appliances, verify that running appears in the Status column and that the disk size you configured for packet capture appears in the Size column. Click Enable next to Triggered Packet Capture, and then click OK.

Next steps

Your packet capture disk is now enabled and ready to store packets. Click Configure if you want to encrypt the disk, or configure global or precision packet captures.

Encrypt the packet capture disk

Packet capture disks can be secured with 256-bit AES encryption.

Here are some important considerations before you encrypt a packet capture disk:
  • You cannot decrypt a packet capture disk after it is encrypted. You can clear the encryption, but the disk is formatted, and all data is deleted.
  • You can lock an encrypted disk to prevent any read or write access to stored packet capture files. If the ExtraHop system is restarted, encrypted disks are automatically locked and remain locked until they are unlocked with the passphrase. Unencrypted disks cannot be locked.
  • You can reformat an encrypted disk, but all data is permanently deleted. You can reformat a locked disk without unlocking the disk first.
  • You can perform a secure delete (or system wipe) of all system data. For instructions, see the ExtraHop Rescue Media Guide.
  1. In the Appliance Settings section, click Disks.
  2. On the Disks page, select one of the following options based on your appliance type.
    • For virtual appliances, click Configure next to Triggered Packet Capture.
    • For physical devices, click Configure next to SSD Assisted Packet Capture.
  3. Click Encrypt Disk.
  4. Specify a disk encryption key from one of the following options:
    • Type a passphrase into the Passphrase and Confirm fields.
    • Click Choose File and select an encryption key file.
  5. Click Encrypt.

Next steps

You can change the disk encryption key by returning to the Disks page and clicking Configure and then Change Disk Encryption Key.

Format the packet capture disk

You can format an encrypted packet capture disk to permanently remove all packet captures. Formatting an encrypted disk removes the encryption. If you want to format an unencrypted packet capture disk, you must remove the disk, and then enable the disk again.

Warning:This action cannot be reversed.
  1. In the Appliance Settings section, click Disks.
  2. On the Disks page, choose one of the following options based on your appliance platform.
    • For virtual appliances, click Configure next to Triggered Packet Capture.
    • For physical devices, click Configure next to SSD Assisted Packet Capture.
  3. Click Clear Disk Encryption.
  4. Click Format.

Remove the packet capture disk

If you want to replace a packet capture disk, you must first remove the disk from the system. When a packet capture disk is removed from the system, all of the data on the disk is permanently deleted.

Removing the disk requires selecting a format option. On physical appliances, you can safely remove the disk from the appliance after this procedure is complete.
  1. In the Appliance Settings section, click Disks.
  2. On the Disks page, choose one of the following options based on your appliance platform.
    • For virtual appliances, click Configure next to Triggered Packet Capture.
    • For physical devices, click Configure next to SSD Assisted Packet Capture.
  3. Click Remove Disk.
  4. Select one of the following format options:
    • Quick Format
    • Secure Erase
  5. Click Remove.

Configure a global packet capture

A global packet capture collects every packet that is sent to the ExtraHop system for the duration that matches the criteria.

  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Packet Captures section, click Global Packet Capture.
  3. In the Start Global Packet Capture section, complete the following fields. You only need to specify the criteria you want for the packet capture:

    Name: A name to identify the packet capture.

    Max Packets: The maximum number of packets to capture.

    Max Bytes: The maximum number of bytes to captures.

    Max Duration (milliseconds): The maximum duration of the packet capture in milliseconds. We recommend the default value of 1000 (1 second), or configure up to 60000 milliseconds (1 minute).

    Snaplen: The maximum number of bytes copied per frame. The default value is 96 bytes, but you can set this value to a number between 1 and 65535.

  4. Click Start.
  5. Click Stop to stop the packet capture before any of the maximum limits are reached.
Download your packet capture.
  • On Reveal(x) Enterprise systems, click Packets from the top menu.
  • On ExtraHop Performance systems, click the System Settings icon , click Administration, and then click View and Download Packet Captures in the Packet Capture section.

Configure a precision packet capture

Precision packet captures require ExtraHop Triggers, which enable you to capture only the packets that meet your specifications. Triggers are highly customizable user-defined code that run upon defined system events.

Before you begin

Packet capture must be licensed and enabled on your ExtraHop system.
It is recommended that you have familiarity with writing triggers before configuring a precision packet capture. Here are some resources to help you learn about ExtraHop Triggers:

In the following example, the trigger captures an HTTP flow with the name HTTP host <hostname> and stops the capture after a maximum of 10 packets are collected.

  1. Click the System Settings icon and then click Triggers.
  2. Click Create.
  3. Type a name for the trigger and select the HTTP_REQUEST and HTTP_RESPONSE events.
  4. Type or paste the following trigger code in the right pane.
    Flow.captureStart("HTTP host " + HTTP.host, {maxPackets: 10});
    
  5. Assign the trigger to a device or group of devices.
    Warning:Running triggers on unnecessary devices and networks exhausts system resources. Minimize performance impact by assigning a trigger only to the specific sources that you need to collect data from.
  6. Select Enable trigger.
  7. Click Save.

Next steps

Download the packet capture file.
  • On Reveal(x) Enterprise systems, click Records from the top menu. Select Packet Capture from the Record Type drop-down list. After the records associated with your packet capture appear, click the Packets icon , and then click Download PCAP.
  • On ExtraHop Performance systems, click the System Settings icon , click Administration, and then click View and Download Packet Captures in the Packet Capture section.

View and download packet captures

If you have packet captures stored on a virtual disk or on an SSD disk in your Discover appliance, you can manage those files from the View Packet Captures page in the Administration settings. For Reveal(x) systems and on Trace appliances, view the Packets page.

  • Click Configure packet capture settings to automatically delete stored packet captures after the specified duration (in minutes).
  • View statistics about your packet capture disk.
  • Specify criteria to filter packet captures and limit the number of files displayed in the Packet Capture List.
  • Select a file from the Packet Capture list and then download or delete the file.

Recordstore

You can send transaction-level records written by the ExtraHop system to a supported recordstore and then query those records from the Records page or REST API on your Command and Discover appliances.

Learn more about ExtraHop Records

Send records from ExtraHop to Google BigQuery

You can configure your ExtraHop system to send transaction-level records to a Google BigQuery server for long-term storage, and then query those records from the ExtraHop system and the ExtraHop REST API. Records on BigQuery recordstores expire after 90 days.

Before you begin

  • You need the BigQuery project ID
  • You need the credential file (JSON) from your BigQuery service account. The service account requires the BigQuery Data Editor, BigQuery Data Viewer, and BigQuery User roles.
  • For access to the ExtraHop Cloud Recordstore, your sensors must be able to access outbound TCP 443 (HTTPS) to these fully-qualified domain names:
    • bigquery.googleapis.com
    • oauth2.googleapis.com
    • www.googleapis.com
    • www.mtls.googleapis.com
    • iamcredentials.googleapis.com

    You can also review the public guidance from Google about computing possible IP address ranges for googleapis.com.

Note:Any triggers configured to send records through commitRecord to an Explore appliance are automatically redirected to the BigQuery. No further configuration is required.

Send records from ExtraHop to BigQuery

Complete this procedure on all connected Command and Discover appliances.
Important:If your ExtraHop system includes a Command appliance, configure all appliances with the same recordstore settings or transfer management to manage settings from the Command appliance.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Records section, click Recordstore.
  3. Select Enable BigQuery as the recordstore.
    Important:If you are migrating to BigQuery from a connected Explore appliance, you will no longer be able to access records stored on the Explore appliance.
  4. In the Project ID field, type the ID for your BigQuery project. The project ID can be found in the BigQuery API console.
  5. In the JSON Credential File field, click Choose File and select the credential JSON file saved from your BigQuery service account. See the Google Cloud documentation on how to create a service account and generate a service account key.
    Important:Create your service account with the following BigQuery roles:
    • BigQuery Data Editor
    • BigQuery Data Viewer
    • BigQuery User
  6. Click Test Connection to verify that your Discover appliance can communicate with the BigQuery server.
  7. Click Save.
After your configuration is complete, you can query for stored records in the ExtraHop system by clicking Records.
Important:Do not modify or delete the table in BigQuery where the records are stored. Deleting the table deletes all stored records.
Transfer recordstore settings

If you have a Command appliance or Reveal(x) 360 connected to your ExtraHop sensors, you can configure and manage the recordstore settings on the sensor, or transfer the management of the settings to the Command appliance or Reveal(x) 360. Transferring and managing the recordstore settings on the Command appliance or Reveal(x) 360 enables you to keep the recordstore settings up to date across multiple sensors.

Recordstore settings are configured for connected recordstores and do not apply to the Explore appliance.
  1. Log in to the Administration settings on the Discover appliance through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Records section, click Recordstore.
  3. From the Recordstore settings drop-down list, select the Command appliance and then click Transfer.
    If you later decide to manage the settings on the sensor, select this Discover appliance from the Recordstore settings drop-down list and then click Transfer.

Send records from ExtraHop to Splunk

You can configure the ExtraHop system to send transaction-level records to a Splunk server for long-term storage, and then query those records from the ExtraHop system and the ExtraHop REST API.

Before you begin

  • You must have version 7.0.3 or later of Splunk Enterprise and a user account that has administrator privileges.
  • You must configure the Splunk HTTP Event Collector before your Splunk server can receive ExtraHop records. See the Splunk HTTP Event Collector documentation for instructions.
Note:Any triggers configured to send records through commitRecord to a recordstore are automatically redirected to the Splunk server. No further configuration is required.

Send records from ExtraHop to Splunk

Complete this procedure on all connected ExtraHop systems.
Important:If your ExtraHop system includes a Command appliance or Reveal(x) 360, configure all appliances with the same recordstore settings or transfer management to manage settings from the Command appliance or Reveal(x) 360.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Records section, click Recordstore.
  3. Select Enable Splunk as the recordstore.
    Note:If you are migrating to Splunk from a connected Explore appliance, you will no longer be able to access records stored on the Explore appliance.
  4. In the Record Ingest Target section, complete the following fields:

    Splunk Ingest Host: The hostname or IP address of your Splunk server.

    HTTP Event Collector Port: The port for the HTTP Event Collector to send records over.

    HTTP Event Collector Token: The authentication token you created in Splunk for the HTTP Event Collector.

  5. In the Record Query Target section, complete the following fields:

    Splunk Query Host: The hostname or IP address of your Splunk server.

    REST API Port: The port to send record queries over.

    Authentication Method: The authentication method, which depends on your version of Splunk.

    For Splunk versions later than 7.3.0, select Authenticate with token, and then paste your Splunk authentication token. For instructions on how to create an authentication token, see the Splunk documentation.

    For Splunk versions earlier than 7.3.0, select Authenticate with username and password, and then type your Splunk credentials.

  6. Clear the Require certificate verification checkbox if your connection does not require a valid SSL/TLS certificate.
    Note:Secure connections to the Splunk server can be verified through trusted certificates that you upload to the ExtraHop system.
  7. In the Index Name field, type the name of the Splunk index where you want to store records.
    The default index on Splunk is called main, however, we recommend that you create a separate index for your ExtraHop records, and type the name of that index. For instructions for creating an index, see the Splunk documentation.
  8. (ExtraHop sensor only) Click Test Connection to verify that the ExtraHop system can reach your Splunk server.
  9. Click Save.
After your configuration is complete, you can query for stored records in the ExtraHop system by clicking Records from the top menu.
Transfer recordstore settings

If you have a Command appliance or Reveal(x) 360 connected to your ExtraHop sensors, you can configure and manage the recordstore settings on the sensor, or transfer the management of the settings to the Command appliance or Reveal(x) 360. Transferring and managing the recordstore settings on the Command appliance or Reveal(x) 360 enables you to keep the recordstore settings up to date across multiple sensors.

Recordstore settings are configured for connected recordstores and do not apply to the Explore appliance.
  1. Log in to the Administration settings on the Discover appliance through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Records section, click Recordstore.
  3. From the Recordstore settings drop-down list, select the Command appliance and then click Transfer.
    If you later decide to manage the settings on the sensor, select this Discover appliance from the Recordstore settings drop-down list and then click Transfer.

ExtraHop Command Settings

The ExtraHop Command Settings section on the Discover appliance enables you to connect the Discover appliance to a Command appliance. Depending on your network configuration, you can establish a connection from the Discover appliance (tunneled connection) or from the Command appliance (direct connection).

  • We recommend that you log in to the Administration settings on your Command appliance, and create a direct connection to the Discover appliance. Direct connections are made from the Command appliance over HTTPS on port 443 and do not require special access. For instructions, see Connect to a Discover appliance from a Command appliance.
  • If your Discover appliance is behind a firewall, you can create an SSH tunnel connection from this Discover appliance to your Command appliance. For instructions, see Connect to a Command appliance from a Discover appliance.

Generate Token

You must generate a token on a Discover appliance before you can connect to a Command appliance. The token ensures a secure connection, making the connection process less susceptible to machine-in-the-middle (MITM) attacks.

Click Generate Token and then complete the configuration on your Command appliance.

Connect to a Command appliance from a Discover appliance

You can connect the Discover appliance to the Command appliance through an SSH tunnel.

We recommend that you always connect appliances directly through the Command appliance; however, a tunneled connection might be required in network environments where a direct connection from the Command appliance is not possible because of firewalls or other network restrictions. After you connect the appliances, you can view and edit the Discover appliance properties, assign a nickname, update firmware, check the license status, and create a diagnostic support package.

Before you begin

  • You can only establish a connection to a Discover appliance that is licensed for the same system edition as the Command appliance. For example, a Command appliance on Reveal(x) Enterprise can only connect to Discover appliances on Reveal(x) Enterprise.
  1. Log in to the Administration settings on the Discover appliance.
  2. In the ExtraHop Command Settings section, click Connect Command Appliances.
  3. Click Connect Appliance and then and then configure the following fields:

    Host: The hostname or IP address of the Command appliance.

    Note:You cannot specify an IPv6 link-local address.

    Setup password: The password for the setup user on the Command appliance.

    Discover nickname (Optional): A friendly name for the node that appears on the Manage Connected Appliances page. If no friendly name is configured, the hostname for the Discover appliance appears instead.

    Reset configuration: If you select the Reset Configuration checkbox, existing node customizations such as device groups, alerts, and triggers will be removed from the appliance. Gathered metrics such as captures and devices will not be removed.

  4. Click Connect.

Connect a Command appliance to Discover appliances

You can manage multiple Discover appliances (sensors) from a Command appliance. After you connect the appliances, you can view and edit the appliance properties, assign a nickname, upgrade firmware, check the license status, and create a diagnostic support package.

The Command appliance connects directly to the Discover appliance over HTTPS on port 443. If it is not possible to establish a direct connection because of firewall restrictions in your network environment, you can connect to the Command appliance through a tunneled connection from the Discover appliance.

Before you begin

  • You can only establish a connection to a Discover appliance that is licensed for the same system edition as the Command appliance. For example, a Command appliance on Reveal(x) Enterprise can only connect to Discover appliances on Reveal(x) Enterprise.
  • We strongly recommend that you configure a unique hostname for each Discover appliance. If the IP address on the Discover appliance is changed, the Command appliance can re-establish connection easily to the Discover appliance by hostname.

Generate a token on the Discover appliance

Generate a token on the Discover appliance before beginning the connection procedure on the Command appliance.
  1. Log in to the Administration settings on the Discover appliance through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the ExtraHop Command Settings section, click Generate Token.
  3. Click Generate Token.
  4. Copy the token and continue to the next procedure.

Connect the Command and Discover appliances

  1. Log in to the Administration settings on the Command appliance through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the ExtraHop Discover Settings section, click Manage Discover Appliances.
  3. In the Discover section, click Connect Appliance.
  4. Type the hostname or IP address of the Discover appliance into the Host field.
  5. Click Connect.
  6. Configure the following fields:

    Token from Discover Appliance: The token that you generated on the Discover appliance.

    Discover Nickname (Recommended): A friendly name for the ExtraHop system. If no nickname is entered, the system is identified by the hostname.

  7. (Optional): Select Reset configuration to remove existing system customizations such as device groups, alerts, and triggers from the ExtraHop system. Gathered metrics such as captures and devices will not be removed.
  8. Click Connect.

Manage Discover Appliances

From the Command appliance, you can view connected Discover appliances and manage some administrative tasks.

Select the checkbox for one or more connected Discover appliances. Then, select from the following administrative tasks.

  • Click Check License to connect to the ExtraHop licensing server and retrieve the latest status for the selected Discover appliances. If your Command appliance is unable to access data from a connected Discover appliance, the license might be invalid.
  • Click Run Support Script and then select from the following options:
    • Click Run Default Support Script to collect information about the selected Discover appliances. You can send this diagnostics file to ExtraHop Support for analysis.
    • Click Run Custom Support Script to upload a file from ExtraHop Support that provides small system changes or enhancements.
  • Click Upgrade Firmware to upgrade the selected Discover appliance. You can enter a URL to the firmware on the Customer Portal website or upload the firmware file from your computer. With either option, we strongly recommend you read the firmware release notes and the firmware upgrade guide.
  • Click Disable or Enable to temporarily alter the connection between Discover and Command appliances. When this connection is disabled, the Command appliance does not display the Discover appliance and cannot access the Discover appliance data.
  • Click Remove Appliance to permanently disconnect selected Discover appliances.

ExtraHop Explore Settings

This section contains the following configuration settings for the ExtraHop Explore appliance.

Connect the Discover and Command appliances to Explore appliances

After you deploy an Explore appliance, you must establish a connection from all ExtraHop Discover and Command appliances to the Explore appliance before you can query for stored records.

Important:If your Explore cluster is configured with manager nodes, only connect the Discover and Command appliances to the data-only nodes. Do not connect to the manager-only nodes.
  1. Log in to the Administration settings on the Command or Discover appliance.
    Note:If the Explore appliance connections are managed from a Command appliance, you must perform this procedure from the Command appliance instead of from each Discover appliance.
  2. In the ExtraHop Explore Settings section, click Connect Explore Appliances.
  3. Click Add New.
  4. In the Explore node field, type the hostname or IP address of any Explore appliance in the Explore cluster.
    Note:Only add data-only nodes if the cluster also contains manager-only nodes.
  5. For each additional Explore appliance in the cluster, click Add New and enter the individual hostname or IP address in the corresponding Explore node field.


  6. Click Save.
  7. Confirm that the fingerprint on this page matches the fingerprint of Node 1 of the Explore cluster.
  8. In the Explore Setup Password field, type the password for the Explore Node 1 setup user account and then click Connect.
  9. When the Explore cluster settings are saved, click Done.

Disconnect the Explore appliances

To halt the ingest of records to the Explore appliance, disconnect all Explore appliances from the Command and Discover appliances.

Note:If appliance connections are managed by a Command appliance, you can only perform this procedure on the Command appliance.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the ExtraHop Explore Settings section, click Connect Explore Appliances.
  3. Click the red X next to every node in the Explore cluster.


  4. Click Save.

Manage Explore Appliances

From the Command appliance, you can view connected Explore appliances and manage some administrative tasks.

View information about connected Explore appliances as individual appliances or as part of a cluster.

  • Click Explore Cluster in the Name field to open the Cluster Properties. You can add a custom nickname for the Explore appliance and view the Cluster ID.
  • Click any node name to open the node properties. By clicking Open Admin UI, you can access the Administration settings for the specific Explore appliance.
  • View the date and time that the appliance was added to this Command appliance.
  • View the license status for your appliances.
  • View the list of actions that you can perform on this appliance.
  • View the Job column to see the status of any running support scripts.

Select the Explore cluster or a single node in the cluster by clicking an empty area in the table, and then select from the following administrative tasks.

  • Click Run Support Script and then select from the following options:
    • Select Run Default Support Script to collect information about the selected Explore appliance. You can send this diagnostics file to ExtraHop Support for analysis.
    • Select Run Custom Support Script to upload a file from ExtraHop Support that provides small system changes or enhancements.
  • Click Remove Cluster to permanently disconnect the selected Explore appliance. This option only prevents you from performing the administrative tasks on this page from the Command appliance. The Explore appliance remains connected to your Discover appliance and continues to collect records.

Collect flow records

You can automatically collect and store all flow records, which are network-layer communications between two devices over an IP protocol. If you enable this setting, but do not add any IP addresses or port ranges, all detected flow records are captured. Configuring flow records for automatic collection is fairly straight-forward and can be a good way to test connectivity to your recordstore.

Before you begin

You must have access to an ExtraHop system with unlimited privileges.
  1. Log in to the Administration settings on the ExtraHop system through https://<extrahop-hostname-or-IP-address>/admin.
  2. In the Records section, click Automatic Flow Records.
  3. Select the Enabled checkbox.
  4. In the Publish Interval field, type a number between 60 and 21600. This value determines how often records from an active flow are sent to the recordstore. The default value is 1800 seconds.
  5. In the IP Address field, type a single IP address or IP address range in IPv4, IPv6, or CIDR format. Then, click the green plus (+) icon. (You can remove an entry by clicking the red delete (X) icon.)
  6. In the Port Ranges field, type a single port or port range. Then, click the green plus (+) icon.
  7. Click Save.
    Flow records that meet your criteria are now automatically sent to your configured recordstore. Wait a few minutes for records to be collected.
  8. In the ExtraHop system, click Records from the top menu, and then click View Records to start a query.
    If you do not see any records, wait a few minutes and try again. If no records appear after five minutes, review your configuration or contact ExtraHop Support.

ExtraHop Explore Status

If you have connected an Explore appliance to your Discover or Command appliances, you can access information about the Explore appliance.

The table on this page provides the following information about any connected Explore appliances.

Activity since
Displays the timestamp when record collection began. This value is automatically reset every 24 hours.
Record Sent
Displays the number of records sent to the Explore appliance from a Discover appliance.
I/O Errors
Displays the number of errors generated.
Queue Full (Records Dropped)
Displays the number of records dropped when records are created faster than they can be sent to the Explore appliance.

ExtraHop Trace Settings

ExtraHop Trace appliances continuously collect and store raw packet data from your Discover appliance. Connect the appliances to begin storing packets on a Trace appliance.

Connect the Discover and Command appliances to the Trace appliance

After you deploy the Trace appliance, you must establish a connection from all ExtraHop Discover and Command appliances to the Trace appliance before you can query for packets.

Connected to Discover Appliance



Connected to Discover and Command Appliance



  1. Log in to the Administration settings on the Discover appliance.
  2. In the ExtraHop Trace Settings section, click Connect Trace Appliances.
  3. Type the hostname or IP address of the Trace appliance in the Appliance hostname field.
  4. Click Pair.
  5. Note the information listed in the Fingerprint field. Verify that the fingerprint listed on this page matches the fingerprint of the Trace appliance listed on the Fingerprint page in the Administration settings of the Trace appliance.
  6. Type the password of the Trace appliance setup user in the Trace Setup Password field.
  7. Click Connect.
  8. To connect additional Trace appliances, repeat steps 2 through 7.
    Note:You can connect a Discover appliance to four or fewer Trace appliances. However, you can connect a Command appliance to an unlimited number of Trace appliances.
  9. If you have a Command appliance, log in to the Administration settings on the Command appliance and repeat steps 3 through 7 for all Trace appliances.

Manage Trace Appliances

From the Command appliance, you can view connected Trace appliances and manage some administrative tasks.

View information about connected Trace appliances.

  • Click Trace Cluster in the Name field to open the Cluster Properties. You can add a custom nickname for the Trace appliance and view the Cluster ID.
  • Click any appliance to view the properties. By clicking Open Admin UI, you can access the Administration settings for the specific Trace appliance.
  • View the date and time that the appliance was added to this Command appliance.
  • View the license status for your appliances.
  • View the list of actions that you can perform on this appliance.
  • View the Job column to see the status of any running support scripts.

Select a Trace appliance. Then, select from the following administrative tasks.

  • Click Run Support Script and then select from the following options:
    • Click Run Default Support Script to collect information about the selected Trace appliance. You can send this diagnostics file to ExtraHop Support for analysis.
    • Click Run Custom Support Script to upload a file from ExtraHop Support that provides small system changes or enhancements.
  • Click Upgrade Firmware to upgrade the selected Trace appliance. You can enter a URL to the firmware on the Customer Portal website or upload the firmware file from your computer. With either option, we strongly recommend you read the firmware release notes and the firmware upgrade guide.
  • Click Remove Appliance to permanently disconnect the selected Trace appliance. This option only prevents you from performing the administrative tasks on this page from the Command appliance. The Trace appliance remains connected to your Discover appliance and continues to collect packets.

Appendix

Common acronyms

The following common computing and networking protocol acronyms are used in this guide.

Acronym Full Name
AAA Authentication, authorization, and accounting
AMF Action Message Format
CIFS Common Internet File System
CLI Command Line Interface
CPU Central Processing Unit
DB Database
DHCP Dynamic Host Configuration Protocol
DNS Domain Name System
ERSPAN Encapsulated Remote Switched Port Analyzer
FIX Financial Information Exchange
FTP File Transfer Protocol
HTTP Hyper Text Transfer Protocol
IBMMQ IBM Message Oriented Middleware
ICA Independent Computing Architecture
IP Internet Protocol
iSCSI Internet Small Computer System Interface
L2 Layer 2
L3 Layer 3
L7 Layer 7
LDAP Lightweight Directory Access Protocol
MAC Media Access Control
MIB Management Information Base
NFS Network File System
NVRAM Non-Volatile Random Access Memory
RADIUS Remote Authentication Dial-In User Service
RPC Remote Procedure Call
RPCAP Remote Packet Capture
RSS Resident Set Size
SMPP Short Message Peer-to-Peer Protocol
SMTP Simple Message Transport Protocol
SNMP Simple Network Management Protocol
SPAN Switched Port Analyzer
SSD Solid-State Drive
SSH Secure Shell
SSL Secure Socket Layer
TACACS+ Terminal Access Controller Access-Control System Plus
TCP Transmission Control Protocol
UI User Interface
VLAN Virtual Local Area Network
VM Virtual Machine

Configure Cisco NetFlow devices

The following are examples of basic Cisco router configuration for NetFlow. NetFlow is configured on a per-interface basis. When NetFlow is configured on the interface, IP packet flow information will be exported to the Discover appliance.

Important:NetFlow takes advantage of the SNMP ifIndex value to represent ingress and egress interface information in flow records. To ensure consistency of interface reporting, enable SNMP ifIndex persistence on devices sending NetFlow to the Discover appliance. For more information on how to enable SNMP ifIndex persistence on your network devices, refer the configuration guide provided by the device manufacturer.

For more information on configuring NetFlow on Cisco switches, see your Cisco router documentation or the Cisco website at www.cisco.com.

Configure an exporter on Cisco Nexus switch

Define a flow exporter by specifying the export format, protocol, and destination.

Log in to the switch command-line interface and run the following commands:
  1. Enter global configuration mode:
    config t
  2. Create a flow exporter and enter flow exporter configuration mode.
    flow exporter <name>
    For example:
    flow exporter Netflow-Exporter-1
  3. (Optional) Enter a description:
    description <string>
    For example:
    description Production-Netflow-Exporter
  4. Set the destination IPv4 or IPv6 address for the exporter.
    destination <eda_mgmt_ip_address>
    For example:
    destination 192.168.11.2
  5. Specify the interface needed to reach the NetFlow collector at the configured destination.
    source <interface_type> <number>
    For example:
    source ethernet 2/2
  6. Specify the NetFlow export version:
    version 9

Configure Cisco switches through Cisco IOS CLI

  1. Log in to the Cisco IOS command-line interface and run the following commands.
  2. Enter global configuration mode:
    config t
  3. Specify the interface, and enter interface configuration mode.
    • Cisco 7500 series routers:
      interface <type> <slot>/<port-adapter>/<port>
      For example:
      interface fastethernet 0/1/0
    • Cisco 7200 series routers:
      interface <type> <slot>/<port>
      For example:
      interface fastethernet 0/1
  4. Enable NetFlow:
    ip route-cache flow
  5. Export NetFlow statistics:
    ip flow-export <ip-address> <udp-port> version 5

    Where <ip-address> is the Management Port + Flow Target interface on the ExtraHop system and <udp-port> is the configured collector UDP port number.

Help for early access features

For help about this early access feature, contact your ExtraHop sales representative.

Last modified 2023-11-07