STIGQter STIGQter: STIG Summary: Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

Ubuntu 22.04 LTS must have an application firewall enabled.

DISA Rule

SV-260516r1184061_rule

Vulnerability Number

V-260516

Group Title

SRG-OS-000480-GPOS-00232

Rule Version

UBTU-22-251020

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Enable the ufw by using the following command:

$ sudo ufw enable

Note: Enabling the firewall will potentially disrupt ssh sessions.

Check Contents

Verify the ufw is enabled on the system with the following command:

$ sudo ufw status
Status: active

If the above command returns the status as "inactive" or any type of error, this is a finding.

If the ufw is not installed, ask the system administrator if another application firewall is installed. If a different firewall is active on the system, this is not a finding.

Vulnerability Number

V-260516

Documentable

False

Rule Version

UBTU-22-251020

Severity Override Guidance

Verify the ufw is enabled on the system with the following command:

$ sudo ufw status
Status: active

If the above command returns the status as "inactive" or any type of error, this is a finding.

If the ufw is not installed, ask the system administrator if another application firewall is installed. If a different firewall is active on the system, this is not a finding.

Check Content Reference

M

Target Key

5594