Ubuntu 24.04 LTS must use SSH to protect the confidentiality and integrity of transmitted information.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
high	V-270666	SRG-OS-000423-GPOS-00187	UBTU-24-100810	SV-270666r1066487_rule	2025-02-18	1

Description
Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000425-GPOS-00189, SRG-OS-000426-GPOS-00190

Description

Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. This requirement applies to both internal and external networks and all types of information system components from which information can be transmitted (e.g., servers, mobile devices, notebook computers, printers, copiers, scanners, and facsimile machines). Communication paths outside the physical protection of a controlled boundary are exposed to the possibility of interception and modification. Protecting the confidentiality and integrity of organizational information can be accomplished by physical means (e.g., employing physical distribution systems) or by logical means (e.g., employing cryptographic techniques). If physical means of protection are employed, then logical means (cryptography) do not have to be employed, and vice versa. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000425-GPOS-00189, SRG-OS-000426-GPOS-00190

ℹ️ Check
Verify the "sshd.service" is enabled and active with the following commands: $ sudo systemctl is-enabled ssh enabled $ sudo systemctl is-active ssh active If "ssh.service" is not active or loaded, this is a finding.

✔️ Fix
Enable the "ssh" service to start automatically on reboot with the following command: $ sudo systemctl enable ssh.service ensure the "ssh" service is running $ sudo systemctl start ssh.service