AOS must enforce approved authorizations for controlling the flow of management information within the network device based on information flow control policies.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-266910	SRG-APP-000097-NDM-000227	ARBA-ND-000213	SV-266910r1039751_rule	2024-10-29	1

Description
A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design. If management information flow is not enforced based on approved authorizations, the network device may become compromised. Information flow control regulates where management information is allowed to travel within a network device. The flow of all management information must be monitored and controlled so it does not introduce any unacceptable risk to the network device or data. Application-specific examples of enforcement occur in systems that employ rule sets or establish configuration settings that restrict information system services or message-filtering capability based on message content (e.g., implementing key word searches or using document characteristics). Applications providing information flow control must be able to enforce approved authorizations for controlling the flow of management information within the system in accordance with applicable policy. Satisfies: SRG-APP-000097-NDM-000227, SRG-APP-000038-NDM-000213

Description

A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design. If management information flow is not enforced based on approved authorizations, the network device may become compromised. Information flow control regulates where management information is allowed to travel within a network device. The flow of all management information must be monitored and controlled so it does not introduce any unacceptable risk to the network device or data. Application-specific examples of enforcement occur in systems that employ rule sets or establish configuration settings that restrict information system services or message-filtering capability based on message content (e.g., implementing key word searches or using document characteristics). Applications providing information flow control must be able to enforce approved authorizations for controlling the flow of management information within the system in accordance with applicable policy. Satisfies: SRG-APP-000097-NDM-000227, SRG-APP-000038-NDM-000213

ℹ️ Check
Verify the AOS configuration with the following command: show running-config \| begin "interface gigabit" Note the configured IP access-group session Access Control List (ACL) for each active interface. For each configured ACL: show ip access-list <ACL name> If each ACL does not end in an "any any deny log" for both IPv4 and IPv6, this is a finding.

✔️ Fix
Configure AOS with the following commands: configure terminal ip access-list session <name> network <A.B.C.D> <netmask A.B.C.D> any any permit any any any deny log ipv6 network <X:X:X:X::X/<0-128> any any permit ipv6 any any any deny log exit write memory interface gigabit <#/#/#> ip access-group session <ACL name> exit write mem