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) mask replies disabled on all external interfaces.

DISA Rule

SV-283852r1203805_rule

Vulnerability Number

V-283852

Group Title

SRG-NET-000362-RTR-000114

Rule Version

NOKI-RT-000340

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 mask replies on all external interfaces, as shown in the example below:

- configure router interface "TO-PE1" icmp no mask-reply

Check Contents

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

Use the command below to verify "ICMP Mask Reply" is set to "False":

- show router interface "TO-PE1" detail | match "ICMP Mask Reply"
ICMP Mask Reply : False

If ICMP Mask Reply messages are enabled on any external interfaces, this is a finding.

Vulnerability Number

V-283852

Documentable

False

Rule Version

NOKI-RT-000340

Severity Override Guidance

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

Use the command below to verify "ICMP Mask Reply" is set to "False":

- show router interface "TO-PE1" detail | match "ICMP Mask Reply"
ICMP Mask Reply : False

If ICMP Mask Reply messages are enabled on any external interfaces, this is a finding.

Check Content Reference

M

Target Key

5746