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

The perimeter router must be configured to restrict it from accepting outbound IP packets that contain an illegitimate address in the source address field via egress filter or by enabling Unicast Reverse Path Forwarding (uRPF).

DISA Rule

SV-216979r604135_rule

Vulnerability Number

V-216979

Group Title

SRG-NET-000205

Rule Version

SRG-NET-000205-RTR-000014

Severity

CAT I

CCI(s)

Weight

10

Fix Recommendation

This requirement is not applicable for the DoDIN Backbone.

Configure the router to ensure that an egress filter or uRPF is configured to restrict the router from accepting any outbound IP packet that contains an external IP address in the source field.

Check Contents

This requirement is not applicable for the DoDIN Backbone.

Review the router configuration to verify uRPF or an egress filter has been configured on all internal interfaces to restrict the router from accepting outbound IP packets that contain an illegitimate address in the source address field.

If uRPF or an egress filter to restrict the router from accepting outbound IP packets that contain an illegitimate address in the source address field has not been configured on all internal interfaces, this is a finding.

Vulnerability Number

V-216979

Documentable

False

Rule Version

SRG-NET-000205-RTR-000014

Severity Override Guidance

This requirement is not applicable for the DoDIN Backbone.

Review the router configuration to verify uRPF or an egress filter has been configured on all internal interfaces to restrict the router from accepting outbound IP packets that contain an illegitimate address in the source address field.

If uRPF or an egress filter to restrict the router from accepting outbound IP packets that contain an illegitimate address in the source address field has not been configured on all internal interfaces, this is a finding.

Check Content Reference

M

Target Key

2917

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