STIGQter: STIG Summary: RUCKUS ICX Router Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 27 May 2025:

The RUCKUS ICX BGP router must be configured to reject outbound route advertisements for any prefixes that do not belong to any customer or the local autonomous system (AS).

DISA Rule

SV-273573r1111031_rule

Vulnerability Number

V-273573

Group Title

SRG-NET-000018-RTR-000005

Rule Version

RCKS-RTR-000050

Severity

CAT II

CCI(s)

• CCI-001368 - Enforce approved authorizations for controlling the flow of information within the system based on organization-defined information flow control policies.

Weight

10

Fix Recommendation

Configure a prefix-list representing prefixes that belong to the local-AS and apply them to BGP neighbors similar to what is shown below:

ip prefix-list mylist seq 10 permit x.1.1.0/24
ip prefix-list mylist seq 10 permit x.1.2.0/24
ip prefix-list mylist seq 15 deny 0.0.0.0/0 ge 8

router bgp
local-as 1000
neighbor x.x.x.x remote-as 1001
neighbor x.x.x.x prefix-list local-AS out

Check Contents

Review the router configuration to verify there is a filter defined to only advertise routes for prefixes that belong to any customers or the local AS.

This requirement is not applicable for the DODIN Backbone.

1. Verify a prefix-list is configured for routes belonging to the local AS.
ICX# show ip prefix-lists
ip prefix-list local-AS: 2 entries
seq 5 permit x.1.1.0/24
seq 10 permit x.1.2.0/24

2. Verify the prefix-list is applied to outbound routes to neighbors.
ICX# show ip bgp config
Current BGP configuration:
router bgp
local-as 1000
neighbor x.x.x.x remote-as 1001
neighbor x.x.x.x prefix-list local-AS out

If the router does not filter out prefix advertisements that do not belong on the local AS, this is a finding.

Vulnerability Number

V-273573

Documentable

False

Rule Version

RCKS-RTR-000050

Severity Override Guidance

Review the router configuration to verify there is a filter defined to only advertise routes for prefixes that belong to any customers or the local AS.

This requirement is not applicable for the DODIN Backbone.

1. Verify a prefix-list is configured for routes belonging to the local AS.
ICX# show ip prefix-lists
ip prefix-list local-AS: 2 entries
seq 5 permit x.1.1.0/24
seq 10 permit x.1.2.0/24

2. Verify the prefix-list is applied to outbound routes to neighbors.
ICX# show ip bgp config
Current BGP configuration:
router bgp
local-as 1000
neighbor x.x.x.x remote-as 1001
neighbor x.x.x.x prefix-list local-AS out

If the router does not filter out prefix advertisements that do not belong on the local AS, this is a finding.

Check Content Reference

M

Target Key

5696