Amazon Linux 2023 must be configured to off-load audit records onto a different system from the system being audited via syslog.

The auditd service does not include the ability to send audit records to a centralized server for management directly. However, it can use a plug-in for audit event multiplexor (audispd) to pass audit records to the local syslog server.

Verify Amazon Linux 2023 is configured use the audisp-remote syslog service with the following command:

$ sudo grep active /etc/audit/plugins.d/syslog.conf active = yes

If the "active" keyword does not have a value of "yes", the line is commented out, or the line is missing, this is a finding.

Configure Amazon Linux 2023 to use the audisp-remote syslog service.

Edit the /etc/audit/plugins.d/syslog.conf file and add or update the "active" option:

active = yes

The audit daemon must be restarted for changes to take effect.