What monitoring and auditing tools or practices would you recommend for keeping track of changes to an ACL system and ensuring continued compliance and security?

I recommend implementing the following monitoring and auditing tools/practices for an ACL system:

1. Centralized logging : Collect logs from all devices involved in access control, such as routers, switches, and firewalls, to a centralized log management system for analysis and correlation.

2. Change management process : Establish a formal change management process that requires approval and documentation of any changes made to the ACLs.

3. Regular audits : Conduct periodic reviews of the ACL configurations to ensure they align with security policies and compliance requirements.

4. Automated monitoring tools : Utilize tools like Security Information and Event Management (SIEM) systems to monitor real-time events and detect anomalies or unauthorized changes in the ACLs.

5. Role-based access control (RBAC) : Implement RBAC to limit the number of users who can modify ACLs, reducing the risk of unauthorized changes.

6. Backup and versioning : Maintain backups of ACL configurations and implement version control to track changes over time, allowing for easy rollback if necessary.