STIGQter STIGQter: STIG Summary: Cisco IOS XE Router RTR Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

The Cisco MPLS router must be configured to use its loopback address as the source address for LDP peering sessions.

DISA Rule

SV-216697r531086_rule

Vulnerability Number

V-216697

Group Title

SRG-NET-000512-RTR-000002

Rule Version

CISC-RT-000590

Severity

CAT III

CCI(s)

Weight

10

Fix Recommendation

Configure the router to use their loopback address as the source address for LDP peering sessions. As noted in the check content, the default behavior is to use its loopback address.

R4(config)#mpls ldp router-id lo0

Check Contents

Review the router configuration to determine if it is compliant with this requirement.

Verify that a loopback address has been configured as shown in the following example:

interface Loopback0
ip address 10.1.1.1 255.255.255.255

By default, routers will use its loopback address for LDP peering. If an address has not be configured on the loopback interface, it will use its physical interface connecting to the LDP peer. If the router-id command is specified that overrides this default behavior, verify that it is a loopback interface as shown in the example below:

mpls ldp router-id Loopback0

If the router is not configured to use its loopback address for LDP peering, this is a finding.

Vulnerability Number

V-216697

Documentable

False

Rule Version

CISC-RT-000590

Severity Override Guidance

Review the router configuration to determine if it is compliant with this requirement.

Verify that a loopback address has been configured as shown in the following example:

interface Loopback0
ip address 10.1.1.1 255.255.255.255

By default, routers will use its loopback address for LDP peering. If an address has not be configured on the loopback interface, it will use its physical interface connecting to the LDP peer. If the router-id command is specified that overrides this default behavior, verify that it is a loopback interface as shown in the example below:

mpls ldp router-id Loopback0

If the router is not configured to use its loopback address for LDP peering, this is a finding.

Check Content Reference

M

Target Key

4028

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