STIGQter: STIG Summary: Firewall Security Requirements Guide Version: 2 Release: 1 Benchmark Date: 22 Jan 2021:

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

DISA Rule

SV-223013r604133_rule

Vulnerability Number

V-223013

Group Title

SRG-NET-000364

Rule Version

SRG-NET-000364-FW-000042

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

Weight

10

Fix Recommendation

Configure the firewall with an egress filter or uRPF on all internal interfaces to restrict the firewall from accepting any outbound packet that contains an illegitimate address in the source field.

Check Contents

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

If uRPF or an egress ACL to restrict the firewall 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-223013

Documentable

False

Rule Version

SRG-NET-000364-FW-000042

Severity Override Guidance

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

If uRPF or an egress ACL to restrict the firewall 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

2912

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