The 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-223780 | RACF-OS-000240 | SV-223780r991593_rule | CCI-000366 | 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 RACF Security Technical Implementation Guide | 2025-06-24 | |||
Details
Check Text (C-223780r991593_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-25441r515029_fix)
Develop a policy application and policy agent to employ a deny-all, allow-by-exception firewall policy for allowing connections to other systems.