STIGQter: STIG Summary: Red Hat Enterprise Linux 9 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

All RHEL 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.

DISA Rule

SV-257979r958908_rule

Vulnerability Number

V-257979

Group Title

SRG-OS-000423-GPOS-00187

Rule Version

RHEL-09-255015

Severity

CAT II

CCI(s)

• CCI-002418 - Protect the confidentiality and/or integrity of transmitted information.
• CCI-002420 - Maintain the confidentiality and/or integrity of information during preparation for transmission.
• CCI-002421 - Implement cryptographic mechanisms to prevent unauthorized disclosure of information and/or detect changes to information during transmission.
• CCI-002422 - Maintain the confidentiality and/or integrity of information during reception.

Weight

10

Fix Recommendation

To enable the sshd service run the following command:

$ systemctl enable --now sshd

Check Contents

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.

Vulnerability Number

V-257979

Documentable

False

Rule Version

RHEL-09-255015

Severity Override Guidance

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.

Check Content Reference

M

Target Key

5551