OS10-RTR-000220 - The Dell OS10 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.

Information

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.

Solution

Configure the RP router to filter PIM register messages received from a multicast DR for any undesirable multicast groups or sources.

OS10# configure terminal
OS10(config)#
OS10(config)#
OS10(config)# ip access-list PIM_REGFILTER
OS10(config-ipv4-acl)# permit ip 10.10.10.2/32 any
OS10(config-ipv4-acl)# exit
OS10(config)#
OS10(config)# ip pim register-filter PIM_REGFILTER

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Dell_OS10_Switch_Y24M12_STIG.zip

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-4, CAT|III, CCI|CCI-001414, Rule-ID|SV-269865r1051980_rule, STIG-ID|OS10-RTR-000220, Vuln-ID|V-269865

Plugin: Dell_OS10

Control ID: 87d14e97c44ed24b302e53cdb082a4e2e01f561236882f51bc766169b16163cf