Title

The RUCKUS ICX Router must be configured to suppress Router Advertisements on all external IPv6-enabled interfaces. (Cat II impact)

Discussion

Many of the known attacks in stateless autoconfiguration are defined in RFC 3756 were present in IPv4 ARP attacks. To mitigate these vulnerabilities, links that have no hosts connected such as the interface connecting to external gateways must be configured to suppress router advertisements.

Check Content

This requirement is not applicable for the DODIN Backbone. Review configuration of external IPv6 interfaces for the command below: interface ethernet x/x/x ipv6 nd suppress-ra If the perimeter router is not configured to suppress router advertisements on all external interfaces, this is a finding.

Fix Text

Configure the router to suppress Router Advertisements on all external IPv6-enabled interfaces as shown in the example below: ICX(config)#interface ethernet 1/1/1 ICX(config-if-e2500-1/1/1)# ipv6 nd suppress-ra

Additional Identifiers

Rule ID: SV-273667r1111050_rule

Vulnerability ID: V-273667

Group Title: SRG-NET-000512-RTR-000014

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.