The Cisco Multicast Source Discovery Protocol (MSDP) router must be configured to limit the amount of source-active messages it accepts on a per-peer basis.
An XCCDF Rule
Description
To reduce any risk of a denial-of-service (DoS) attack from a rogue or misconfigured MSDP router, the router must be configured to limit the number of source-active messages it accepts from each peer.
- ID
- SV-216822r531087_rule
- Version
- CISC-RT-000940
- Severity
- Low
- References
- Updated
Remediation Templates
A Manual Procedure
Configure the router to limit the amount of source-active messages it accepts from each peer.
RP/0/0/CPU0:R2(config)#router msdp
RP/0/0/CPU0:R2(config-msdp)#peer x.14.2.1
RP/0/0/CPU0:R2(config-msdp-peer)#maximum external-sa nnn
RP/0/0/CPU0:R2(config-msdp-peer)#exit