WTM must configure management ACLs to enforce approved authorizations for controlling the flow of management information.

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.

This requirement also applies to Zero Trust initiatives.

Satisfies: SRG-APP-000038-NDM-000213, SRG-APP-000435-NDM-000315, SRG-APP-000516-NDM-000335

1. Log in to the WTM Web UI. 2. Navigate to Admin >> Management ACL.

If management ACLs to enforce approved authorizations for controlling the flow of management information are not configured, this is a finding.

1. Log in to the WTM Web UI. 2. Navigate to Admin >> Management ACL. 3. Click "Add". 4. Enter a name for the ACL. 5. Under "Type", select "Both". 6. Click "New TCP". 7. Under Match Port, enter "22" for the SSH CLI, and under Action select "accept". 8. Click "New TCP". 9. Under Match Port, enter "443" for the HTTP Web UI, and under Action, select "accept". 10. Click "New UDP". 11. Under Match Port, enter "161" for SNMPv3, and under Action, select "accept". 12. Click "New TCP". 13. Under Match Port, enter "51966" for the internal systems port, and under Action, select "drop". 14. Click "New TCP". 15. Under Match Port, enter "51967" for the internal systems port, and under Action, select "drop". 16. Click "New TCP". 17. Under Match Port, enter "830" for NETCONF, and under Action, select "drop". 18. Click "Enabled". 19. Click "Commit".