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 configure a DNS processing mode set be Network Manager.

DISA Rule

SV-269288r1050170_rule

Vulnerability Number

V-269288

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

ALMA-09-023560

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Configure NetworkManager in AlmaLinux OS 9 to use a DNS mode.

In "/etc/NetworkManager/NetworkManager.conf" add the following line in the "[main]" section:

dns = none

NetworkManager must be reloaded for the change to take effect.

$ systemctl reload NetworkManager

Check Contents

Note: If AlmaLinux OS 9 is configured to use a DNS resolver other than Network Manager, the configuration must be documented and approved by the information system security officer (ISSO).

Verify that AlmaLinux OS 9 has a DNS mode configured in Network Manager.

$ NetworkManager --print-config
[main]
dns=none

If the "dns" key in the [main] section does not exist or is not set to "none" or "default", this is a finding.

Vulnerability Number

V-269288

Documentable

False

Rule Version

ALMA-09-023560

Severity Override Guidance

Note: If AlmaLinux OS 9 is configured to use a DNS resolver other than Network Manager, the configuration must be documented and approved by the information system security officer (ISSO).

Verify that AlmaLinux OS 9 has a DNS mode configured in Network Manager.

$ NetworkManager --print-config
[main]
dns=none

If the "dns" key in the [main] section does not exist or is not set to "none" or "default", this is a finding.

Check Content Reference

M

Target Key

5664