Set up IoT Security and XSOAR for SIEM Integration

Set up IoT Security and Cortex XSOAR to integrate with SIEM.
To set up IoT Security to integrate through Cortex XSOAR with SIEM, you must add a Cortex XSOAR engine to your network. This engine will receive syslog notifications in CEF format from IoT Security and send them on to the SIEM server.
You must also configure the SIEM integration instance in XSOAR. To do this, you need the IP address of your SIEM server.

Cortex XSOAR Engine Installation

The Cortex XSOAR engine initiates connections to the SIEM server and to the Cortex cloud and provides the means through which they communicate with each other. Although it's possible to install an XSOAR engine on machines running Windows, macOS, and Linux operating systems, only an engine on a Linux machine supports IoT Security integrations. For more information about operating system and hardware requirements, see the Cortex Administrator’s Guide.
We recommend downloading the XSOAR engine using the shell installer script and installing it on a Linux machine. This simplifies the deployment by automatically installing all required dependencies and also enables remote engine upgrades.
When placing the XSOAR engine on your network, make sure it can reach your SIEM server on UDP port 514, or whatever protocol and port for which the server is configured to listen for incoming syslog event notifications.
The firewall must also allow the engine to form HTTPS connections on TCP port 443 to the Cortex cloud at https://<your-domain>.iot.demisto.live/. You can see the URL of your XSOAR instance when you log in to the IoT Security portal and click
Integrations
Launch Cortex XSOAR
. It’s visible in the address bar of the web page displaying the XSOAR interface.
To create an XSOAR engine, access the Cortex XSOAR interface (from the IoT Security portal, click
Integrations
Launch Cortex XSOAR
). Click
Settings
Engines
+ Create New Engine
. Choose
Shell
as the type.
For installation instructions, see Install Cortex XSOAR Engines.

Configure IoT Security and Cortex XSOAR

  1. Log in to IoT Security and from there access SIEM settings in Cortex XSOAR.
    1. Log in to IoT Security and then click
      Integrations
      .
    2. IoT Security uses Cortex XSOAR to integrate with SIEM, and the settings you must configure to integrate with SIEM are in the XSOAR interface. To access these settings, click
      Launch Cortex XSOAR
      .
      The Cortex XSOAR interface opens in a new browser window.
    3. Click
      Settings
      in the left navigation menu, search for
      siem
      to locate it among other instances.
  2. Configure the SIEM integration instance.
    1. Click the SIEM instance settings icon ( ) to open the settings panel.
    2. Enter the SIEM server IP address and the protocol and port number on which it listens for syslog notification messages. Choose the XSOAR engine that you want to communicate with the SIEM server and leave the other settings at their default values.
    3. When finished, click
      Run test
      or
      Test
      .
      If the test is successful, a Success message appears. If not, check that the settings were entered correctly and then test the configuration again.
    4. After the test succeeds, click
      Save & exit
      to save your changes and close the settings panel.
  3. To enable PANW IoT 3rd Party SIEM Integration Instance, click
    Enable
    .
  4. Return to the IoT Security portal and check the status of the Syslog Server integration.
    When you see that its status has changed from
    Disabled
    to
    Active
    , the IoT Security/Cortex XSOAR setup is complete.
    XSOAR begins an automated process that sends SIEM incrementally updated data from IoT Security about changes to device attributes, new alerts, and new vulnerabilities occurring within the last 15 minutes.
  5. Export the IoT device inventory from IoT Security to SIEM.
    Although regular, automated incremental updates are now in progress, SIEM doesn’t yet have a complete device inventory, list of currently active security alerts, or list of unresolved device vulnerabilities from IoT Security. This requires a bulk data export from IoT Security to SIEM that you initiate from the XSOAR interface at a time that’s suitable for network operations. To shorten the time required for the bulk export to complete, plan to run it during off-peak hours on a slow day such as a holiday or weekend. Exporting an inventory of 30,000-40,000 IoT devices takes up to 12 hours when a network is under normal usage. Doing this when network traffic is light can shorten the time needed to complete the job.
    To start the bulk export of the entire device inventory, click
    Launch Cortex Access
    to return to the XSOAR interface. Click
    Jobs
    , select
    PANW IoT Bulk Export to SIEM
    , and then click
    Run now
    .
    During the bulk export and after the job completes, the automated incremental update will continue running every 15 minutes.
    Although it’s possible to run multiple bulk export jobs in parallel, doing so can affect the XSOAR engine performance. Therefore, we advise not running more than one at a time.

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