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 perimeter router must be configured to filter ingress traffic at the external interface on an inbound direction.

DISA Rule

SV-283906r1203967_rule

Vulnerability Number

V-283906

Group Title

SRG-NET-000205-RTR-000004

Rule Version

NOKI-RT-000950

Severity

CAT II

CCI(s)

• CCI-001097 - Monitor and control communications at the external managed interfaces to the system and at key managed interfaces within the system.

Weight

10

Fix Recommendation

This requirement is not applicable for the DODIN Backbone.

Configure an IPv4 filter using the example below:

- configure filter ip-filter 10 create
- config>filter>ip-filter# entry 10 create
- config>filter>ip-filter>entry$ match src-ip 2.2.2.2/32
- config>filter>ip-filter>entry$ action forward
- config>filter>ip-filter>entry$ exit all

Configure an IPv6 filter using the example below:

- configure filter ipv6-filter 20 create
- config>filter>ipv6-filter# entry 10 create
- config>filter>ipv6-filter>entry$ match src-ip 2001:acad:1234:200::2/128
- config>filter>ipv6-filter>entry$ action forward
- config>filter>ipv6-filter>entry$ exit
- config>filter>ipv6-filter# exit all

Apply the IPv4 and IPv6 filters to the interface in an outbound direction using the configuration below:

- configure router interface "TO-PE2" ingress filter ip 10
- configure router interface "TO-PE2" ingress filter ipv6 20

Check Contents

This requirement is not applicable for the DODIN Backbone.

Review the router configuration to verify the ingress ACL is bound to the external interface in an inbound direction.

To verify all interfaces have the ingress filter assigned, verify fields "Ingress Filter" and "Ingr IPv6 Flt" for all interfaces using the command below:

- show router interface "TO-PE2" detail | match "Ingress Filter"

Egress Filter : 10 Ingress Filter : 10

- show router interface "TO-PE2" detail | match "Ingr IPv6 Flt"

Egr IPv6 Flt : 20 Ingr IPv6 Flt : 20

If the router is not configured to filter traffic entering the network at the external interface in an inbound direction, this is a finding.

Vulnerability Number

V-283906

Documentable

False

Rule Version

NOKI-RT-000950

Severity Override Guidance

This requirement is not applicable for the DODIN Backbone.

Review the router configuration to verify the ingress ACL is bound to the external interface in an inbound direction.

To verify all interfaces have the ingress filter assigned, verify fields "Ingress Filter" and "Ingr IPv6 Flt" for all interfaces using the command below:

- show router interface "TO-PE2" detail | match "Ingress Filter"

Egress Filter : 10 Ingress Filter : 10

- show router interface "TO-PE2" detail | match "Ingr IPv6 Flt"

Egr IPv6 Flt : 20 Ingr IPv6 Flt : 20

If the router is not configured to filter traffic entering the network at the external interface in an inbound direction, this is a finding.

Check Content Reference

M

Target Key

5746