Information
The IAO/NSO will ensure the route to the AG network adheres to the PPS CAL boundary 13 and 14 policies and is in compliance with all perimeter filtering defined in the perimeter and router sections of the Network STIG.
The enclave perimeter requirement for filtering, to include JTF-GNO PPS filtering rules, and monitoring traffic will be enforced for any traffic from the AG. All traffic entering the enclave from the AG must enter through the firewall and be monitored by internal IDS. All traffic leaving the enclave, regardless of the destination--AG or NIPRNet addresses, will be filtered by the premise router's egress filter to verify that the source IP address belongs to the enclave.
NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.
Solution
Ensure the perimeter is protected from this path. A deny by default policy is enforced at this connection and the site is in compliance with all PPS 13 and 14 boundaries.