It is good practice to log the actions on the org.jboss.security class. This category includes all the security related actions on the particular instance of the AS (authentication, failures, administrative changes ..).
It is good to keep these events in a separate file for easy classification and analysis.
Create a new category and reference the handler needed:
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Audit and Accountability.This control applies to the following type of system Unix.