Check: CISC-RT-000950
Cisco IOS XE Router RTR STIG:
CISC-RT-000950
(in versions v2 r9 through v1 r1)
Title
The Cisco Multicast Source Discovery Protocol (MSDP) router must be configured to use a loopback address as the source address when originating MSDP traffic. (Cat III impact)
Discussion
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.
Check Content
Verify that the loopback interface is used as the source address for all MSDP packets generated by the router. ip msdp peer x.44.2.34 connect-source Loopback12 remote-as nn If the router does not use its loopback address as the source address when originating MSDP traffic, this is a finding.
Fix Text
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
Additional Identifiers
Rule ID: SV-216733r531086_rule
Vulnerability ID: V-216733
Group Title: SRG-NET-000512-RTR-000011
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000366 |
The organization implements the security configuration settings. |
Controls
Number | Title |
---|---|
CM-6 |
Configuration Settings |