Details

The administrator must ensure that a PIM neighbor filter is bound to all interfaces that have PIM enabled.

Protocol Independent Multicast (PIM) is a routing protocol used to build multicast distribution tress for forwarding multicast traffic across the network infrastructure. PIM traffic must be limited to only known PIM neighbors by configuring and binding a PIM neighbor filter to those interfaces that have PIM enabled.

NOTE: This check requires manual verification to ensure all allowable PIM neighbors are entered into the appropriate IPv6 access-list.

NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.

Solution

If IPv4 or IPv6 multicast routing is enabled, ensure that all interfaces enabled for PIM has a neighbor filter to only accept PIM control plane traffic from the documented routers according to the multicast topology diagram.

Supportive Information

The following resource is also helpful.

• https://iasecontent.disa.mil/stigs/zip/U_Network_Infrastructure_Router_L3_Switch_V8R29_STIG.zip

This control applies to the following type of system Cisco.

References

• CAT|II
• Rule-ID|SV-40315r1_rule
• STIG-ID|NET-MCAST-002
• Vuln-ID|V-30578

Source

• Tenable.com/audits