STIGQter: STIG Summary: Fortinet FortiGate Firewall Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 05 Jan 2026:

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

DISA Rule

SV-234152r852962_rule

Vulnerability Number

V-234152

Group Title

SRG-NET-000364-FW-000031

Rule Version

FNFG-FW-000115

Severity

CAT II

CCI(s)

• CCI-002403 - Only allow incoming communications from organization-defined authorized sources routed to organization-defined authorized destinations.

Weight

10

Fix Recommendation

Log in to the FortiGate GUI with Super- or Firewall Policy-Admin privilege.

1. Click the Policy and Objects.
2. Click IPv4 or IPv6 Policy.
3. Click +Create New.
4. Name the policy, select Incoming and Outgoing Interfaces.
5. Create the policies with authorized sources and destinations.
6. Create the policies with Action set to either DENY or ACCEPT.
7. Ensure the Enable this policy is toggled to right.
8. Click OK.
9. Ensure a policy is created for each interface.

Check Contents

Log in to the FortiGate GUI with Super- or Firewall Policy-Admin privilege.

1. Click the Policy and Objects.
2. Click IPv4 or IPv6 Policy.
3. Verify the policies are configured for all Interfaces.
4. Verify the polices are configured with Action set either to DENY or ACCEPT based on the organizational requirement.

If a Firewall Policy is not applied to all interfaces, this is a finding.

Vulnerability Number

V-234152

Documentable

False

Rule Version

FNFG-FW-000115

Severity Override Guidance

Log in to the FortiGate GUI with Super- or Firewall Policy-Admin privilege.

1. Click the Policy and Objects.
2. Click IPv4 or IPv6 Policy.
3. Verify the policies are configured for all Interfaces.
4. Verify the polices are configured with Action set either to DENY or ACCEPT based on the organizational requirement.

If a Firewall Policy is not applied to all interfaces, this is a finding.

Check Content Reference

M

Target Key

5258