DISA STIGS Viewer

OL 9 networked systems must have and implement SSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission.

Overview

Finding ID Version Rule ID IA Controls Severity
V-271483 OL09-00-000251 SV-271483r1091161_rule   Medium
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-000424-GPOS-00188, SRG-OS-000425-GPOS-00189, SRG-OS-000426-GPOS-00190
STIG Date
Oracle Linux 9 Security Technical Implementation Guide 2025-05-08

Details

Check Text (C-75533r1091159_chk)
Verify that OL 9 networked systems implement SSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission.

Verify that "sshd" is active with the following command:

$ systemctl is-active sshd
active

If the "sshd" service is not active, this is a finding.
Fix Text (F-75440r1091160_fix)
Enable the sshd service with the following command:

$ systemctl enable --now sshd