The Juniper Multicast Source Discovery Protocol (MSDP) router must be configured to only accept MSDP packets from known MSDP peers.
An XCCDF Rule
Description
<VulnDiscussion>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.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-217093r855911_rule
- Severity
- Medium
- References
- Updated
Remediation - 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