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 source of the events, such as the source IP address at a minimum.

DISA Rule

SV-234138r611414_rule

Vulnerability Number

V-234138

Group Title

SRG-NET-000077-FW-000012

Rule Version

FNFG-FW-000035

Severity

CAT III

CCI(s)

• CCI-000133 - Ensure that audit records containing information that establishes the source 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- or Log-and-Report-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 UUIDs 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 traffic log events contain source and destination IP addresses, and interfaces.

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 IP address of source devices, this is a finding.

Vulnerability Number

V-234138

Documentable

False

Rule Version

FNFG-FW-000035

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 traffic log events contain source and destination IP addresses, and interfaces.

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 IP address of source devices, this is a finding.

Check Content Reference

M

Target Key

5258