The Juniper Multicast Source Discovery Protocol (MSDP) router must be configured to limit the amount of source-active messages it accepts on per-peer basis.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-217097 | JUNI-RT-000930 | SV-217097r604135_rule | CCI-001368 | low |
| 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. | ||||
| STIG | Date | |||
| Juniper Router RTR Security Technical Implementation Guide | 2024-12-05 | |||
Details
Check Text (C-217097r604135_chk)
Review the router configuration to determine if it is configured to limit the amount of source-active messages it accepts on a per-peer basis.
protocols {
…
…
…
}
msdp {
export SA_EXPORT;
import SA_IMPORT;
group AS25 {
peer x.x.x.x {
active-source-limit {
maximum nnn;
}
If the router is not configured to limit the source-active messages it accepts, this is a finding.
Fix Text (F-18324r297160_fix)
Configure the router to limit the amount of source-active messages it accepts from each peer.
[edit protocols msdp group AS25 peer x.x.x.x]
set active-source-limit maximum nnn