STIGQter: STIG Summary: Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide Version: 1 Release: 7 Benchmark Date: 01 Jul 2026:

AlmaLinux OS 9 must not allow a noncertificate trusted host SSH logon to the system.

DISA Rule

SV-269264r1050146_rule

Vulnerability Number

V-269264

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

ALMA-09-020810

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Configure the AlmaLinux OS 9 SSH daemon to not allow a noncertificate trusted host SSH logon to the system with the following command:

Add the following line to "/etc/ssh/sshd_config", or uncomment the line and set the value to "no":

HostbasedAuthentication no

Alternatively, add the setting to an include file if the line "Include /etc/ssh/sshd_config.d/*.conf" is found at the top of the "/etc/ssh/sshd_config" file:

$ echo 'HostbasedAuthentication no' > /etc/ssh/sshd_config.d/40-hostbasedauthentication.conf

Restart the SSH daemon for the settings to take effect:

$ systemctl restart sshd.service

Check Contents

Verify the operating system does not allow a noncertificate trusted host SSH logon to the system with the following command:

$ sshd -T | grep hostbasedauthentication

hostbasedauthentication no

If the "HostbasedAuthentication" keyword is not set to "no", this is a finding.

Vulnerability Number

V-269264

Documentable

False

Rule Version

ALMA-09-020810

Severity Override Guidance

Verify the operating system does not allow a noncertificate trusted host SSH logon to the system with the following command:

$ sshd -T | grep hostbasedauthentication

hostbasedauthentication no

If the "HostbasedAuthentication" keyword is not set to "no", this is a finding.

Check Content Reference

M

Target Key

5664