Ubuntu 22.04 LTS must have an application firewall enabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-260516 | UBTU-22-251020 | SV-260516r1184061_rule | CCI-000366 | medium |
| Description | ||||
| Firewalls protect computers from network attacks by blocking or limiting access to open network ports. Application firewalls limit which applications are allowed to communicate over the network. | ||||
| STIG | Date | |||
| Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide | 2026-02-06 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-6
1.00
- DISA · V2R8 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.4.1
1.00
- DISA · V2R8 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.4.2
1.00
- DISA · V2R8 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000366
1.00
- DISA · V2R8 · disa_xccdf · related
Details
Check Text (C-260516r1184061_chk)
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.
Fix Text (F-64153r1184060_fix)
Enable the ufw by using the following command:
$ sudo ufw enable
Note: Enabling the firewall will potentially disrupt ssh sessions.