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

The perimeter router must be configured to drop IPv6 packets containing a Hop-by-Hop header with invalid option type values.

DISA Rule

SV-283837r1203760_rule

Vulnerability Number

V-283837

Group Title

SRG-NET-000364-RTR-000202

Rule Version

NOKI-RT-000190

Severity

CAT II

CCI(s)

• CCI-002403 - Only allow incoming communications from organization-defined authorized sources routed to organization-defined authorized destinations.

Weight

10

Fix Recommendation

Configure the router to drop IPv6 packets containing a Hop-by-Hop header with option type values of 0x04 (Tunnel Encapsulation Limit), 0xC9 (Home Address Destination), or 0xC3 (NSAP Address).

Configure an IPv6 filter, as shown in the example below:

- config>filter# ipv6-filter 40 create
- config>filter>ipv6-filter# entry 10 create
- config>filter>ipv6-filter>entry# match hop-by-hop-opt true
- config>filter>ipv6-filter>entry>match# back
- config>filter>ipv6-filter>entry# action drop
- config>filter>ipv6-filter>entry# exit all

Apply the IPv6 filter to the interfaces:

- configure router interface "TO-PE2" ingress filter ipv6 40

Check Contents

This requirement is not applicable for the DODIN Backbone.

Review the router configuration to determine if filters are bound to the applicable interfaces to drop IPv6 packets containing a Hop-by-Hop header with option type values of 0x04 (Tunnel Encapsulation Limit), 0xC9 (Home Address Destination), or 0xC3 (NSAP Address).

Verify the IPv6 filter has the HopByHop option set to "True", as shown in the example below:

- show filter ipv6 40

Entry : 10 (Inactive)
Description : (Not Specified)
Log Id : n/a
Src. IP : ::/0
Src. Port : n/a
Dest. IP : ::/0
Dest. Port : n/a
Next Header : Undefined
Dscp : Undefined
ICMP Type : Undefined ICMP Code : Undefined
Sampling : Off Int. Sampling : On
Tcp-flag : (Not Specified)
Fragment : Off
HopByHop Opt : True Routing Type0 : Off

Verify an "Ing IPv6 Flt" has been applied to the interface, as shown in the example below:

- show router interface "TO-PE2" detail | match "Ingr IPv6 Flt"
Egr IPv6 Flt : none Ingr IPv6 Flt : 40

If the router is not configured to drop IPv6 packets containing a Hop-by-Hop header with invalid option type values, this is a finding.

Vulnerability Number

V-283837

Documentable

False

Rule Version

NOKI-RT-000190

Severity Override Guidance

This requirement is not applicable for the DODIN Backbone.

Review the router configuration to determine if filters are bound to the applicable interfaces to drop IPv6 packets containing a Hop-by-Hop header with option type values of 0x04 (Tunnel Encapsulation Limit), 0xC9 (Home Address Destination), or 0xC3 (NSAP Address).

Verify the IPv6 filter has the HopByHop option set to "True", as shown in the example below:

- show filter ipv6 40

Entry : 10 (Inactive)
Description : (Not Specified)
Log Id : n/a
Src. IP : ::/0
Src. Port : n/a
Dest. IP : ::/0
Dest. Port : n/a
Next Header : Undefined
Dscp : Undefined
ICMP Type : Undefined ICMP Code : Undefined
Sampling : Off Int. Sampling : On
Tcp-flag : (Not Specified)
Fragment : Off
HopByHop Opt : True Routing Type0 : Off

Verify an "Ing IPv6 Flt" has been applied to the interface, as shown in the example below:

- show router interface "TO-PE2" detail | match "Ingr IPv6 Flt"
Egr IPv6 Flt : none Ingr IPv6 Flt : 40

If the router is not configured to drop IPv6 packets containing a Hop-by-Hop header with invalid option type values, this is a finding.

Check Content Reference

M

Target Key

5746