LogRhythm Elasticsearch

Update LogRhythm Elasticsearch

Prerequisites

1. Ensure network connectivity between the DX and the Security Validation Director.
2. Identify the IP address used to access Elasticsearch. This could be direct access to an Elasticsearch node, Primary node, or something such as an nginx reverse proxy.

Configuration

Complete the following steps on the LogRhythm Server (if single-tiered deployment) or DX (administrative access not required).

On the LogRhythm Server

SSH from the LogRhythm DX to the Validation Platform Director.

• On a Microsoft(R) Windows(R) host, plink.exe can be used as follows:

  plink -R 9200:localhost:9200 nodeone@DIRECTORIP

• If linux DX, use normal ssh instead of plink:

  ssh -N -R 9200:localhost:9200 nodeone@DIRECTORIP

  

  SSH from LogRhythm to the Validation Platform Director

On the Validation Platform Director (CLI)

1. SSH to the Security Validation Director using the "nodeone" password.

   1. ssh nodeone@DIRECTOR_IP

      

      SSH to the Validation Platform Director using nodeone password

2. Assume root access.

   1. sudo su -

      

      Assume root access

3. Add the following custom iptables rule to allow communication to Elastic over the SSH tunnel:

   1. iptables -A INPUT -p tcp -s 127.0.0.1 --dport 9200 -j ACCEPT

      

      Add iptables Rules

4. Add the following configuration lines to /etc/ssh/sshd_config.

   1. TCPKeepAlive yes

   2. ClientAliveInterval 15

      

      Configure Keepalive

5. Restart the SSH service.

   service sshd restart

   

   Restart SSH service

Update the Validation Platform

Prerequisites

Information to gather before you start:

1. Identify the port for Elasticsearch communication (default is 9200).
2. Identify whether the protocol is HTTP or HTTPS for connections to the Elasticsearch port.

3. Identify the field name mappings for the following (there could be multiple of each, depending on log sources and configuration):

   • Source IP
   • Destination IP
   • Source Port
   • Destination Port
   • Event Start Time (timestamp)
   • Event Unique ID
   • Event Signature ID
   • Event Description
   • Event Source Host

Configuration

To add the LogRhythm Elasticsearch integration

1. Go to Settings > Integrations.

2. Click Add Integration > LogRhythm Elasticsearch.

   

   LogRhythm Elasticsearch Integration

3. Enter the Host.

   This will almost always be either "localhost" or "127.0.0.1".

4. Enter the Port, Protocol, and if using, the Username and Password.

5. Select the appropriate version.

   This may adjust the default query and field name mapping section.

6. Review and update the Query, if necessary.

7. Expand Advanced options.

   

   LogRhythm Elasticsearch Integration (Advanced Options)

8. (Optional) Update Query time and Delay time.

   The Query time is the amount of time (minutes) before and after the query runs that the platform looks for events, while the Delay time is the amount of time (minutes) that the platform waits to run the first query after a Job Action starts. For example, you configure your integration with the following values: Query time = 5, Query interval = 30 seconds, and Delay time = 0. When a Job Actions starts at 12:00:00, the first time the query runs, the platform looks for events from 11:55:00 to 12:00:00. Then 30 seconds later, it looks for events from 11:55:30 to 12:00:30. This interval continues, with the last query looking from 12:00:00 to 12:05:00. If you instead configured the Delay time to equal 10, it would run the same query, but it wouldn't start that query until 12:10:00.
   If your monitors are set to run more frequently than the query time, this configuration impacts the pass/fail results for AEDA monitors.

9. (Optional) Enable the special query for Host CLI Actions and review the Query.

   If you enable the Host CLI Actions query and use the %HOST_CLI_ACTOR_HOSTNAMES% variable, the platform will substitute the plain hostname and the information from the Alternate Hostname field on the Actor configuration page.

10. (Optional) Select Discover network devices automatically.

11. Review and update the field name mapping section.

    1. Inputs are enclosed by square brackets [ ].
    2. Inputs point to the path location (["_id"]).
    3. Nested locations should be enclosed in one set of brackets, encompassed in quotes, and separated by commas (["_source","src_ip"] ).

12. Modify the Query Interval and Event Time Adjustment, if necessary.

13. (Optional) Assign a Name.

14. (Optional) Choose Yes to save suspicious events.

15. Click Submit.

Verify connectivity

To verify connectivity to LogRhythm Elasticsearch

Click Test to verify that:

• The Director can communicate with the Elasticsearch host IP address on the port specified.
• The Elasticsearch credentials can perform queries on the index or indexes with relevant data.

Updating the Integration

If you update LogRhythm, you will need to update the integration within the Validation Platform. Modifying the version may adjust the default query and the field name mapping section.

Any changes you made previously to the query and field mapping will be retained. Review the default query and the field name mapping sections to verify that no additional changes are required.