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 router must be configured to have Internet Control Message Protocol (ICMP) unreachable notifications disabled on all external interfaces.

DISA Rule

SV-283853r1203808_rule

Vulnerability Number

V-283853

Group Title

SRG-NET-000362-RTR-000113

Rule Version

NOKI-RT-000350

Severity

CAT II

CCI(s)

• CCI-002385 - Protect against or limit the effects of organization-defined types of denial of service events.

Weight

10

Fix Recommendation

Disable ICMP unreachable notifications on all external interfaces, as shown in the example below:

- configure router interface "TO-PE2" icmp no unreachables

Check Contents

Review the device configuration to determine if controls have been defined to ensure the router does not send ICMP unreachable notifications out to any external interfaces.

Use the command below to verify "ICMP Unreachable" is set to Disable:

- show router interface "TO-PE2" detail | match "Unreachables"
Unreachables : Disabled
Unreachables : Number - 100 Time (seconds) - 10

If ICMP unreachable notifications are enabled on any external interfaces, this is a finding.

Vulnerability Number

V-283853

Documentable

False

Rule Version

NOKI-RT-000350

Severity Override Guidance

Review the device configuration to determine if controls have been defined to ensure the router does not send ICMP unreachable notifications out to any external interfaces.

Use the command below to verify "ICMP Unreachable" is set to Disable:

- show router interface "TO-PE2" detail | match "Unreachables"
Unreachables : Disabled
Unreachables : Number - 100 Time (seconds) - 10

If ICMP unreachable notifications are enabled on any external interfaces, this is a finding.

Check Content Reference

M

Target Key

5746