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V-66139

The HP FlexFabric Switch must establish boundaries for IPv6 Admin-Local, IPv6 Site-Local, IPv6 Organization-Local scope, and IPv4 Local-Scope multicast traffic.

Finding ID
HFFS-RT-000026
Rule ID
SV-80629r1_rule
Severity
Cat II
CCE
(None)
Group Title
SRG-NET-000019-RTR-000005
CCI
CCI-001414
Target Key
(None)
Documentable
No
Discussion

If multicast traffic is forwarded beyond the intended boundary, it is possible that it can be intercepted by unauthorized or unintended personnel. Administrative scoped multicast addresses are locally assigned and are to be used exclusively by the enterprise network or enclave. Administrative scoped multicast traffic must not cross the enclave perimeter in either direction. Restricting multicast traffic makes it more difficult for a malicious user to access sensitive traffic. Admin-Local scope is encouraged for any multicast traffic within a network intended for network management, as well as for control plane traffic that must reach beyond link-local destinations.

Fix Text

Configure the appropriate boundaries to contain packets addressed within the administratively scoped zone. Defined multicast addresses are FFx4::/16, FFx5::/16, FFx8::/16, and 239.255.0.0/16. Enable ip multicast globally [HP] ipv6 multicast routing Specify the IPv6 multicast boundary on multicast enabled interface [HP] interface gig 0/2 [HP-GigabitEthernet0/2] ipv6 multicast boundary scope 4 [HP-GigabitEthernet0/2] ipv6 multicast boundary scope 5 [HP-GigabitEthernet0/2] ipv6 multicast boundary scope 8 specify the IPv4 multicast boundary on multicast enabled interfaces [HP-GigabitEthernet0/2] multicast boundary 239.255.0.0 16

Check Content

Review the multicast topology diagram to determine if there are any documented Admin-Local (FFx4::/16), Site-Local (FFx5::/16), or Organization-Local (FFx8::/16) multicast boundaries for IPv6 traffic or any Local-Scope (239.255.0.0/16) boundaries for IPv4 traffic. Verify the appropriate boundaries are configured on the applicable multicast-enabled interfaces. If appropriate multicast scope boundaries have not been configured, this is a finding. [HP] display current-configuration interface GigabitEthernet 0/2 interface GigabitEthernet0/2 port link-mode route description OVERSUBSCRIBE ip address 201.6.36.1 255.255.255.0 multicast boundary 239.255.0.0 16 ipv6 multicast boundary scope 4 ipv6 multicast boundary scope 5 ipv6 multicast boundary scope 8 ipv6 address 2115:C:24::1/120