The IBM z/OS Policy Agent must be configured to deny-all, allow-by-exception firewall policy for allowing connections to other systems.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-224006	TSS0-OS-000100	SV-224006r877847_rule		Medium

Description
Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example: registry settings; account, file, directory permission settings; and settings for functions, ports, protocols, services, and remote connections.

Description

Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the system, including the parameters required to satisfy other security control requirements. Security-related parameters include, for example: registry settings; account, file, directory permission settings; and settings for functions, ports, protocols, services, and remote connections.

STIG	Date
IBM z/OS TSS Security Technical Implementation Guide	2023-03-20

Details

Check Text ( C-25679r516417_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-25667r516418_fix)
Develop a policy application and policy agent to employ a deny-all, allow-by-exception firewall policy for allowing connections to other systems.