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A Protocol Independent Multicast (PIM) neighbor filter must be implemented to restrict and control multicast traffic.


Overview

Finding ID Version Rule ID IA Controls Severity
V-66367 NET2007 SV-80857r1_rule Low
Description
Protocol Independent Multicast (PIM) is a routing protocol that is used by the IP core for forwarding multicast traffic. 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.
STIG Date
Network Infrastructure Policy Security Technical Implementation Guide 2017-12-07

Details

Check Text ( C-67013r1_chk )
Step 1: Verify that an ACL is configured that will specify the allowable PIM neighbors similar to the following example.

ip access-list standard pim-neighbors permit 192.0.2.1
permit 192.0.2.3

Step 2: Verify that a pim neighbor-filter command is configured on all PIM enabled interfaces that is referencing the PIM neighbor ACL similar to the following example:

interface GigabitEthernet0/3
ip address 192.0.2.2 255.255.255.0
pim neighbor-filter pim-neighbors

If PIM neighbor filter is not bound to interfaces that have PIM enabled, this is a finding.
Fix Text (F-72443r1_fix)
The router administrator configures and binds a PIM neighbor filter to those interfaces that have PIM enabled.