Configure the Tenable Beat Log Source in SIEM

This section provides instructions for configuring the Tenable Beat log source in the LogRhythm SIEM using the log source virtualization template.

The Open Collector sends the output of every beat to the Agent in a single syslog stream. The parent log source is a generic type: "Syslog - Open Collector." A log source virtualization template included with the LogRhythm Knowledge Base (KB) creates child log sources for each beat.

Prerequisites

• LogRhythm Client Console

• LogRhythm Administrator Account

• Open the following port:

• Download the latest KB .lkb file:

  • From a computer with Internet access, log in to the LogRhythm Community.

  • On the menu at the top of the screen, hover over New Releases and click Knowledge Base Releases.

  • Click Knowledge Base Request Form, and then select Request KB File. 

  • Enter the correct License ID, Deployment ID and Product Version. 

  • Click Get Knowledge Base.

  • Save the Knowledge Base .lkb file and transfer it to the computer on which the Knowledge Base is being updated.

Step 1: Configure Syslog Relay

This step explains how to configure the Syslog Relay. The Open Collector needs Syslog Relay for the following reasons:

• By default, the agent timestamps syslog messages as they come in. The timestamp in the SIEM should reflect when the log was generated, not when the agent received this log.

• An additional Syslog Relay Regular Expression is required to correctly extract the timestamp.

Beats configured using the JSON parsing method should use the regex relay outlined in the Configure Beats for JSON Parsing topic and skip this step.

To configure Syslog Relay:

1. Click the System Monitors tab.

2. Double-click the agent to which you will send the Open Collector syslog.

3. Click the Syslog and Flow Settings tab.

4. Select the Enable Syslog Server check box, if it is not already selected.

5. Type the Open Collector IP Address in the Syslog Relay Hosts field on the left.

6. Type the following regular expression as the first line in Syslog Relay Regular Expressions:

   CODE

   ^<(?<priority>\d{1,3})>\s*(?<message>(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})T(?<hour>\d{2}):(?<minute>\d{2}):(?<seconds>\d{2})(\.(?<ms>\d+))?Z?[-+]?[0-9:]{0,}\s.*)

7. Click OK.

The following is an example of a configured Syslog Relay, where the Open Collector IP address is 10.3.0.1.

Step 2: Accept the Pending Log Source

After Open Collector logs are sent to the Windows System Monitor Agent, you need to accept the pending log source.

1. Click the Log Sources tab.

2. In the New Log Sources grid, select the Action check boxes for the following:

   • Log Source Type. Syslog - Open Collector
     Do not select the Exabeam Beat-specific log source types yet. You will do that in a later step.

   • Log Processing Policy. LogRhythm Default

3. Right-click the selection, click Actions, and then click Accept.

4. Select one of the following:

   • Click Customize and change the following as needed:

     • Collection System Monitor Entity

     • Log Message Processing Settings

     • Log Data Management and Processing Settings

     • Silent Log Message Source Settings

   • Click Default to select customized defaults that were previously selected. 

   • Select a default batch amount between 100 and 5000.

5. Click OK.

6. Click Refresh to see the newly accepted Log Source in the grid.

Step 3: Apply the Log Source Virtualization Template for Tenable Beat Log Messages

Use the log source virtualization template imported in the KB during Step 1 to create a log source specifically for Tenable Beat logs.

1. Double-click the newly accepted Open Collector Log Source.
   The Log Message Source Properties window appears.

2. Click the Log Source Virtualization tab.

3. Select the Enable Virtualization check box.

4. Click Create Virtual Log Sources.
   The Create Virtual Log Sources dialog box appears.

5. In the Log Source Virtualization Template menu, select:
   Syslog - Open Collector - Tenable Vulnerability

6. Click Save.
   The confirmation prompt appears.

7. Click OK.
   New Log Sources appear in the grid as children of your parent log source.

Step 4: (Optional) Enable Silent Log Source Detection 

Silent Log Source Detection indicates when one of your log sources has stopped reporting logs.

1. Double-click a child log source. For example, Syslog - Open Collector - Tenable Vulnerability
   The Virtual Log Message Source Properties window appears.

2. Click the Additional Settings tab.

3. Select the Enable Silent Log Source Detection check box.

4. Configure warning and error intervals. LogRhythm recommends a warning after 1 hour and an error after 2 hours.

5. Click OK.

6. Click the Alarm Rules tab.

7. Search for LogRhythm Silent Log Source Error and ensure the value in the Status column is Enabled.