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

The firewall must apply ingress filters to traffic that is inbound to the network through any active external interface.

DISA Rule

SV-206703r604133_rule

Vulnerability Number

V-206703

Group Title

SRG-NET-000364

Rule Version

SRG-NET-000364-FW-000031

Severity

CAT II

CCI(s)

• CCI-002403 - The information system only allows incoming communications from organization-defined authorized sources routed to organization-defined authorized destinations.

Weight

10

Fix Recommendation

Configure a security policy to each inbound zone and/or interface to implement continuous filtering of outbound traffic.

Apply security policy zones/interfaces through which inbound traffic flows from untrusted external networks or subnetworks.

Configure the ingress filters for the management interface to block all transit traffic (i.e., any traffic not destined to the firewall itself) and so that traffic accessing the firewall originates from the NOC.

Check Contents

Obtain and review the list of authorized sources and destinations. This is usually part of the System Design Specification, Accreditation or Authorization Package, ports, protocols, and services documentation, and Ports, Protocols, and Services Management (PPSM) database.

If the list of authorized sources and destinations is not available, this is a finding.

Review the firewall configuration for each of the configured inbound zones and interfaces.

Verify an ingress filter (e.g., Access Control List) is applied to each inbound zone/interface, including the management interface.

Verify ingress filters for the management interface to block all transit traffic (i.e., any traffic not destined to the firewall itself). Verify that traffic accessing the firewall originates from the Network Operations Center (NOC).

If an ingress filter is not configured for each active inbound zone or interface, this is a finding.

Vulnerability Number

V-206703

Documentable

False

Rule Version

SRG-NET-000364-FW-000031

Severity Override Guidance

Obtain and review the list of authorized sources and destinations. This is usually part of the System Design Specification, Accreditation or Authorization Package, ports, protocols, and services documentation, and Ports, Protocols, and Services Management (PPSM) database.

If the list of authorized sources and destinations is not available, this is a finding.

Review the firewall configuration for each of the configured inbound zones and interfaces.

Verify an ingress filter (e.g., Access Control List) is applied to each inbound zone/interface, including the management interface.

Verify ingress filters for the management interface to block all transit traffic (i.e., any traffic not destined to the firewall itself). Verify that traffic accessing the firewall originates from the Network Operations Center (NOC).

If an ingress filter is not configured for each active inbound zone or interface, this is a finding.

Check Content Reference

M

Target Key

2912

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