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The Ubuntu operating system must enable and run the uncomplicated firewall(ufw).

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-238355UBTU-20-010434SV-238355r958672_ruleCCI-002314medium
Description
Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access management difficult at best. Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless. Ubuntu operating system functionality (e.g., RDP) must be capable of taking enforcement action if the audit reveals unauthorized activity. Automated control of remote access sessions allows organizations to ensure ongoing compliance with remote access policies by enforcing connection rules of remote access applications on a variety of information system components (e.g., servers, workstations, notebook computers, smartphones, and tablets).
STIGDate
Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide2025-05-16

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

NET-14.1Automated Monitoring & Control
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (22) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-17(1)Monitoring and Control
1.00
AC-17(2)Protection of Confidentiality and Integrity Using Encryption
1.00
AC-17(9)Disconnect or Disable Access
1.00
AC-18(1)Authentication and Encryption
1.00
AC-2(1)Automated System Account Management
1.00
AC-3Access Enforcement
1.00
AU-12Audit Record Generation
1.00
AU-3Content of Audit Records
1.00
CA-3(5)Restrictions on External System Connections
1.00
CM-5(1)Automated Access Enforcement and Audit Records
1.00

+12 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.1.12
1.00
CCI1 mapping
CCI-002314
1.00

Details

Check Text (C-238355r958672_chk)

Verify the Uncomplicated Firewall is enabled on the system by running the following command: $ systemctl is-enabled ufw If the above command returns the status as "disabled", this is a finding. Verify the Uncomplicated Firewall is active on the system by running the following command: $ systemctl is-active ufw If the above command returns "inactive" or any kind of error, this is a finding. If the Uncomplicated Firewall is not installed, ask the System Administrator if another application firewall is installed. If no application firewall is installed, this is a finding.

Fix Text (F-41524r654239_fix)

Enable the Uncomplicated Firewall by using the following command: $ sudo systemctl enable --now ufw.service