UBTU-20-010433 - The Ubuntu operating system must have an application firewall installed in order to control remote access methods.
Information
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).
Solution
Install the Uncomplicated Firewall by using the following command:$ sudo apt-get install ufw
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CAN_Ubuntu_20-04_LTS_V1R5_STIG.zip
Item Details
Audit Name: DISA STIG Ubuntu 20.04 LTS v1r5
Category: ACCESS CONTROL
References: 800-53|AC-17(1), CAT|II, CCI|CCI-002314, Rule-ID|SV-238354r654237_rule, STIG-ID|UBTU-20-010433, Vuln-ID|V-238354
Plugin: Unix
Control ID: 3d75b9eaefb21d4b687fb8bea41076aafa542d1702a4bb5c39e2fce459b96b5a