The Juniper Multicast Source Discovery Protocol (MSDP) router must be configured to only accept MSDP packets from known MSDP peers.
An XCCDF Rule
Description
MSDP peering with customer network routers presents additional risks to the DISN Core, whether from a rogue or misconfigured MSDP-enabled router. To guard against an attack from malicious MSDP traffic, the receive path or interface filter for all MSDP-enabled RP routers must be configured to only accept MSDP packets from known MSDP peers.
- ID
- SV-217093r855911_rule
- Version
- JUNI-RT-000890
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Configure the receive path filter to only accept MSDP packets from known MSDP peers as shown in the following example:
[edit firewall family inet filter PROTECT_RE]
set term MSDP_PEERS from protocol tcp port msdp
set term MSDP_PEERS from source-address 0.0.0.0/0
set term MSDP_PEERS from source-address 1.1.1.1/32 except