IBM z/OS Policy Agent must employ a deny-all, allow-by-exception firewall policy for allowing connections to other systems.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-223560 | ACF2-OS-000240 | SV-223560r991593_rule | Medium |
| Description |
| Failure to restrict network connectivity only to authorized systems permits inbound connections from malicious systems. It also permits outbound connections that may facilitate exfiltration of DoD data. |
| STIG | Date |
| IBM z/OS ACF2 Security Technical Implementation Guide | 2025-03-11 |
Details
| Check Text (C-25233r504707_chk) |
| Examine the Policy Agent policy statements. If it can be determined that the policy agent employs a deny-all, allow-by exception firewall policy for allowing connections to other systems, this is not a finding. |
| Fix Text (F-25221r504708_fix) |
| Develop a policy application and policy agent to employ a deny-all, allow-by-exception firewall policy for allowing connections to other systems. |