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

AlmaLinux OS 9 SSH daemon must not allow Kerberos authentication.

DISA Rule

SV-269162r1050044_rule

Vulnerability Number

V-269162

Group Title

SRG-OS-000364-GPOS-00151

Rule Version

ALMA-09-009480

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure the SSH daemon to not allow Kerberos authentication.

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

KerberosAuthentication no

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

KerberosAuthentication no

Restart the SSH daemon for the settings to take effect:

$ systemctl restart sshd.service

Check Contents

Verify the SSH daemon does not allow Kerberos authentication with the following command:

$ /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*kerberosauthentication'

kerberosauthentication no

If the value is returned as "yes", the returned line is commented out, no output is returned, and the use of Kerberos authentication has not been documented with the information system security officer (ISSO), this is a finding.

Vulnerability Number

V-269162

Documentable

False

Rule Version

ALMA-09-009480

Severity Override Guidance

Verify the SSH daemon does not allow Kerberos authentication with the following command:

$ /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*kerberosauthentication'

kerberosauthentication no

If the value is returned as "yes", the returned line is commented out, no output is returned, and the use of Kerberos authentication has not been documented with the information system security officer (ISSO), this is a finding.

Check Content Reference

M

Target Key

5664