STIGQter: STIG Summary: Arista MLS EOS 4.X Router Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 02 Apr 2025:

The Arista MSDP router must be configured to limit the amount of source-active messages it accepts on per-peer basis.

DISA Rule

SV-255995r882327_rule

Vulnerability Number

V-255995

Group Title

SRG-NET-000018-RTR-000009

Rule Version

ARST-RT-000090

Severity

CAT III

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 the Arista MSDP router to limit the amount of source-active messages it accepts from each peer.

!
router (config) #router msdp
router (config-router-msdp) #peer 10.1.1.5
router (config-router-msdp-peer 10.1.1.5) # sa-limit 500
router (config-router-msdp) #peer 10.1.55.78
router (config-router-msdp-peer 10.1.55.78) # sa-limit 900
router (config-router-msdp-peer 10.1.55.78) # exit

Check Contents

To verify the MSDP peer and the sa-limit filter is configured, execute the command "show run | sec router msdp".

router msdp
peer 10.1.12.2
sa-limit 500
peer 10.1.55.78
sa-limit 900

If the Arista router is not configured with a peer limit, this is a finding.

Vulnerability Number

V-255995

Documentable

False

Rule Version

ARST-RT-000090

Severity Override Guidance

To verify the MSDP peer and the sa-limit filter is configured, execute the command "show run | sec router msdp".

router msdp
peer 10.1.12.2
sa-limit 500
peer 10.1.55.78
sa-limit 900

If the Arista router is not configured with a peer limit, this is a finding.

Check Content Reference

M

Target Key

5513