STIGQter: STIG Summary: Cisco IOS XR Router RTR Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 23 Oct 2020:

The Cisco MPLS router must be configured to have TTL Propagation disabled.

DISA Rule

SV-216790r531087_rule

Vulnerability Number

V-216790

Group Title

SRG-NET-000512-RTR-000004

Rule Version

CISC-RT-000620

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

Weight

10

Fix Recommendation

Configure the MPLS router to disable TTL propagation as shown in the example below.

RP/0/0/CPU0:R3(config)#mpls ip-ttl-propagate disable

Check Contents

Review the router configuration to verify that TTL propagation is disabled as shown in the example below.

mpls ip-ttl-propagate disable

If the MPLS router is not configured to disable TTL propagation, this is a finding.

Vulnerability Number

V-216790

Documentable

False

Rule Version

CISC-RT-000620

Severity Override Guidance

Review the router configuration to verify that TTL propagation is disabled as shown in the example below.

mpls ip-ttl-propagate disable

If the MPLS router is not configured to disable TTL propagation, this is a finding.

Check Content Reference

M

Target Key

4029

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