Detections
Analytics

1.97 CISC-RT-000950

Information

The Cisco Multicast Source Discovery Protocol (MSDP) router must be configured to use a loopback address as the source address when originating MSDP traffic.

GROUP ID: V-216733
RULE ID: SV-216733r991901

Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability of MSDP routers. It is easier to construct appropriate ingress filters for router management plane traffic destined to the network management subnet since the source addresses will be from the range used for loopback interfaces instead of a larger range of addresses used for physical interfaces. Log information recorded by authentication and syslog servers will record the router's loopback address instead of the numerous physical interface addresses.

Solution

Configure the router to use its loopback address is used as the source address when sending MSDP packets.

R2(config)#ip msdp peer x.44.2.34 connect-source lo12 remote-as nn

See Also

https://workbench.cisecurity.org/benchmarks/26261

Item Details

Category: CONTINGENCY PLANNING

References: 800-53|CP-8, CAT|III, CCI|CCI-004931, Rule-ID|SV-216733r991901_rule, STIG-ID|CISC-RT-000950, Vuln-ID|V-216733

Plugin: Cisco

Control ID: c8ccd6b49dbe7d3cbf08e8b7e86af6fe1454bae0d8ca4ec27fc3f5c8e1de8a7e