STIGQter: STIG Summary: Router Security Requirements Guide Version: 4 Release: 2 Benchmark Date: 23 Apr 2021:

The router must be configured to drop all fragmented Internet Control Message Protocol (ICMP) packets destined to itself.

DISA Rule

SV-207134r604135_rule

Vulnerability Number

V-207134

Group Title

SRG-NET-000205

Rule Version

SRG-NET-000205-RTR-000002

Severity

CAT II

CCI(s)

• CCI-001097 - The information system monitors and controls communications at the external boundary of the information system and at key internal boundaries within the system.

Weight

10

Fix Recommendation

Ensure all routers have their receive path filter configured to drop all fragmented ICMP packets.

Check Contents

Review the access control list (ACL) or filter for the router receive path.

Verify that it will drop all fragmented ICMP packets destined to itself.

If the router is not configured with a receive-path filter to drop all fragmented ICMP packets, this is a finding.

Note: If the platform does not support the receive path filter, verify that all Layer 3 interfaces have an ingress ACL to control what packets are allowed to be destined to the router for processing.

Vulnerability Number

V-207134

Documentable

False

Rule Version

SRG-NET-000205-RTR-000002

Severity Override Guidance

Review the access control list (ACL) or filter for the router receive path.

Verify that it will drop all fragmented ICMP packets destined to itself.

If the router is not configured with a receive-path filter to drop all fragmented ICMP packets, this is a finding.

Note: If the platform does not support the receive path filter, verify that all Layer 3 interfaces have an ingress ACL to control what packets are allowed to be destined to the router for processing.

Check Content Reference

M

Target Key

2917

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