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V-269904

CAT II (Medium)

The Dell OS10 Router must be configured to suppress Router Advertisements on all external IPv6-enabled interfaces.

Rule ID

SV-269904r1052097_rule

STIG

Dell OS10 Switch Router Security Technical Implementation Guide

Version

V1R2

CCIs

CCI-000366

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 the router configuration to verify Router Advertisements are not enabled on all external IPv6-enabled interfaces.

Verify the ipv6 nd send-ra setting is not configured.
!
interface ethernet1/1/4
 ...
 ipv6 nd send-ra
 
If the router is not configured to suppress Router Advertisements on all external IPv6-enabled interfaces, this is a finding.

Fix Text

Configure the router to suppress Router Advertisements on all external IPv6-enabled interfaces.

OS10(config)# interface ethernet 1/1/4
OS10(conf-if-eth1/1/4)# no ipv6 nd send-ra