STIGQter: STIG Summary: Nokia Service Router OS 25.x Router Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 28 Apr 2026:

The Nokia Multicast Source Discovery Protocol (MSDP) router must be configured to filter received source-active multicast advertisements for any undesirable multicast groups and sources.

DISA Rule

SV-283850r1203799_rule

Vulnerability Number

V-283850

Group Title

SRG-NET-000018-RTR-000007

Rule Version

NOKI-RT-000320

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 MSDP router to implement an import policy to block multicast advertisements for undesirable multicast groups and sources.

Configure the prefix-list:

- configure router policy-options
- config>router>policy-options# begin
- config>router>policy-options# prefix-list "Multicast Group and Source"
- config>router>policy-options>prefix-list# prefix 172.200.200.2/32 exact
- config>router>policy-options>prefix-list# prefix 233.0.0.0/8 exact
- config>router>policy-options>prefix-list# exit

Configure the policy statement:

- config>router>policy-options# policy-statement "MSDP-IMPORT-SA"
- config>router>policy-options>policy-statement# entry 10
- config>router>policy-options>policy-statement>entry# from prefix-list "Multicast Group and Source"
- config>router>policy-options>policy-statement>entry# action drop
- config>router>policy-options>policy-statement>entry>action# exit
- config>router>policy-options>policy-statement>entry# exit
- config>router>policy-options>policy-statement# default-action accept
- config>router>policy-options>policy-statement>default-action# exit
- config>router>policy-options>policy-statement# exit
- config>router>policy-options# commit
- config>router>policy-options# exit all

Apply the import policy:

- configure router msdp peer 1.1.1.1 import "MSDP-IMPORT-SA"

Check Contents

Review the Nokia router configuration to determine if there is export policy to block local source-active multicast advertisements.

Use the command below to view the details of the policy:

- show router policy "MSDP-IMPORT-SA"
entry 10
from
prefix-list "Multicast Group and Source"
exit
action drop
exit
exit

Verify the appropriate "Import Policy" has been applied to msdp peers using the command below:

- show router msdp peer detail | match "Import Policy"
Import Policy : MSDP-IMPORT-SA

Verify an export policy is bound to each MSDP peer.

If no export policy is applied, this is a finding.

Vulnerability Number

V-283850

Documentable

False

Rule Version

NOKI-RT-000320

Severity Override Guidance

Review the Nokia router configuration to determine if there is export policy to block local source-active multicast advertisements.

Use the command below to view the details of the policy:

- show router policy "MSDP-IMPORT-SA"
entry 10
from
prefix-list "Multicast Group and Source"
exit
action drop
exit
exit

Verify the appropriate "Import Policy" has been applied to msdp peers using the command below:

- show router msdp peer detail | match "Import Policy"
Import Policy : MSDP-IMPORT-SA

Verify an export policy is bound to each MSDP peer.

If no export policy is applied, this is a finding.

Check Content Reference

M

Target Key

5746