The Juniper multicast Rendezvous Point (RP) router must be configured to filter Protocol Independent Multicast (PIM) Register messages received from the Designated Router (DR) for any undesirable multicast groups and sources.
An XCCDF Rule
Description
<VulnDiscussion>Real-time multicast traffic can entail multiple large flows of data. An attacker can flood a network segment with multicast packets, over-using the available bandwidth and thereby creating a denial-of-service (DoS) condition. Hence, it is imperative that register messages are accepted only for authorized multicast groups and sources.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-253994r844015_rule
- Severity
- Low
- References
- Updated
Remediation - Manual Procedure
Configure the RP router to filter PIM register messages received from a multicast DR for any undesirable multicast groups or sources.
set policy-options policy-statement <name> term filter_groups from route-filter <multicast address>/<mask> <match criterion>
set policy-options policy-statement <name> term filter_groups from route-filter <additional multicast address>/<mask> <match criterion>
set policy-options policy-statement <name> term filter_groups then reject