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

The FortiGate firewall must generate traffic log entries containing information to establish the outcome of the events, such as, at a minimum, the success or failure of the application of the firewall rule.

DISA Rule

SV-234139r611417_rule

Vulnerability Number

V-234139

Group Title

SRG-NET-000078-FW-000013

Rule Version

FNFG-FW-000040

Severity

CAT II

CCI(s)

• CCI-000134 - Ensure that audit records containing information that establishes the outcome of the event.

Weight

10

Fix Recommendation

This fix can be performed on the FortiGate GUI or on the CLI.
Log in to the FortiGate GUI with Super-Admin privilege.

1. Click Log and Report.
2. Click Log Settings.
3. Click All for the Event Logging and Local Traffic Log options (for most verbose logging), or Click Customize and choose granular logging options to meet organization needs.
4. Scroll to UUID in Traffic Log and toggle Policy and Address buttons to enable.
5. Click Apply.

In addition to these log settings, configure individual firewall policies with the most suitable Logging Options.

1. Click Policy and Objects.
2. Click IPv4 or IPv6 Policy.
3. For each policy, configure Logging Options to log All Sessions (for most verbose logging).
4. Confirm each created Policy is Enabled.
5. Click OK.

or

1. Open a CLI console, via SSH or available from the GUI.
2. Run the following command:
# config log eventfilter
# set event enable
# set system enable
# set endpoint enable
# set user enable
# set security-rating enable
# end
# config firewall policy
# edit 0
# set srcintf {interface_name_1}
# set dstintf {interface_name_2}
# set srcaddr {address_a}
# set dstaddr {address_b}
# set schedule {always}
# set service {services required by site policy}
# set action {accept}
# set logtraffic enable
# next
# end

The {} indicate the object is defined by the organization policy.

Check Contents

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

1. Click Log and Report.
2. Click Forward Traffic or Local Traffic.
3. Double-click on an Event to view Log Details.
4. Verify log events contain status information like success or failure of the application of the firewall rule.

In addition to System log settings, verify that individual IPv4 policies are configured with most suitable Logging Options.

1. Click Policy and Objects.
2. Click IPv4 or IPv6 Policy.
3. Verify all Policy rules are configured with Logging Options set to log All Sessions (for most verbose logging).

If the log events do not contain status information, like success or failure of the application of the firewall rule, this is a finding.

Vulnerability Number

V-234139

Documentable

False

Rule Version

FNFG-FW-000040

Severity Override Guidance

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

1. Click Log and Report.
2. Click Forward Traffic or Local Traffic.
3. Double-click on an Event to view Log Details.
4. Verify log events contain status information like success or failure of the application of the firewall rule.

In addition to System log settings, verify that individual IPv4 policies are configured with most suitable Logging Options.

1. Click Policy and Objects.
2. Click IPv4 or IPv6 Policy.
3. Verify all Policy rules are configured with Logging Options set to log All Sessions (for most verbose logging).

If the log events do not contain status information, like success or failure of the application of the firewall rule, this is a finding.

Check Content Reference

M

Target Key

5258