The F5 BIG-IP appliance providing content filtering must generate a log record when unauthorized network services are detected.

Unauthorized or unapproved network services lack organizational verification or validation, and therefore may be unreliable or serve as malicious rogues for valid services.

Examples of network services include service-oriented architectures (SOAs), cloud-based services (e.g., infrastructure as a service, platform as a service, or software as a service), cross-domain, Voice Over Internet Protocol, instant messaging, auto-execute, and file sharing.

If the BIG-IP appliance does not perform content filtering as part of the traffic management functions, this is not applicable.

If using the BIG-IP AFM module to perform content filtering:

AFM ACL: From the BIG-IP GUI: 1. Security. 2. Network Firewall. 3. Policies. 4. <Policy Name>. 5. Verify a rule is configured that uses a "Classification Policy".

Log Profile: From the BIG-IP GUI: 1. Security. 2. Event Logs. 3. Logging Profiles. 4. Edit the global-network profile. 5. Classification tab. 6. Verify the Log Publisher is set to the desired setting. (For production environments, F5 recommends using remote logging.)

If configured rules in the policy do not detect use of network services that have not been authorized or approved by the ISSM and ISSO, at a minimum, this is a finding.

AFM ACL: From the BIG-IP GUI: 1. Security. 2. Network Firewall. 3. Policies. 4. <Policy Name>. 5. Configure a rule that uses a "Classification Policy". Note: To create a Classification Policy, go to Traffic Intelligence >> Policies. 6. Click "Commit Changes to System".

Log Profile: From the BIG-IP GUI: 1. Security. 2. Event Logs. 3. Logging Profiles. 4. Edit the global-network profile. 5. Check "Enabled" for "Classification". 6. Classification tab. 7. Configure the Log Publisher. (For production environments, F5 recommends using remote logging.) 8. Click "Update".