The router must block IPv6 well-known multicast addresses on the ingress and egress inbound filters, (FF00::/8).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
SRG-NET-000205-RTR-000106	SRG-NET-000205-RTR-000106	SRG-NET-000205-RTR-000106_rule		Medium

Description
The following well-known multicast addresses are predefined and shall never be assigned to any multicast group. Reserved Multicast Addresses: FF00:0:0:0:0:0:0:0 FF08:0:0:0:0:0:0:0 FF01:0:0:0:0:0:0:0 FF09:0:0:0:0:0:0:0 FF02:0:0:0:0:0:0:0 FF0A:0:0:0:0:0:0:0 FF03:0:0:0:0:0:0:0 FF0B:0:0:0:0:0:0:0 FF04:0:0:0:0:0:0:0 FF0C:0:0:0:0:0:0:0 FF05:0:0:0:0:0:0:0 FF0D:0:0:0:0:0:0:0 FF06:0:0:0:0:0:0:0 FF0E:0:0:0:0:0:0:0 FF07:0:0:0:0:0:0:0 FF0F:0:0:0:0:0:0:0

Description

The following well-known multicast addresses are predefined and shall never be assigned to any multicast group. Reserved Multicast Addresses: FF00:0:0:0:0:0:0:0 FF08:0:0:0:0:0:0:0 FF01:0:0:0:0:0:0:0 FF09:0:0:0:0:0:0:0 FF02:0:0:0:0:0:0:0 FF0A:0:0:0:0:0:0:0 FF03:0:0:0:0:0:0:0 FF0B:0:0:0:0:0:0:0 FF04:0:0:0:0:0:0:0 FF0C:0:0:0:0:0:0:0 FF05:0:0:0:0:0:0:0 FF0D:0:0:0:0:0:0:0 FF06:0:0:0:0:0:0:0 FF0E:0:0:0:0:0:0:0 FF07:0:0:0:0:0:0:0 FF0F:0:0:0:0:0:0:0

STIG	Date
Router Security Requirements Guide	2013-07-30

Details

Check Text ( C-SRG-NET-000205-RTR-000106_chk )
Review the perimeter router configuration to verify filters are in place to restrict the IPv6 addresses. Verify that ingress and egress filters for IPv6 have been defined to deny the Multicast Source Addresses (FF00::/8), and log all violations. If the ingress and egress filters for IPv6 are not defined to deny the Multicast Source Addresses (FF00::/8), and log all violations, this is a finding.

Fix Text (F-SRG-NET-000205-RTR-000106_fix)
Configure the perimeter router ingress and egress filters for IPv6 to deny the Multicast Source Addresses (FF00::/8), and log all violations.