RHEL 9 must configure a DNS processing mode set be Network Manager.
An XCCDF Rule
Description
<VulnDiscussion>In order to ensure that DNS resolver settings are respected, a DNS mode in Network Manager must be configured.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-257949r925834_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Configure NetworkManager in RHEL 9 to use a DNS mode.
In "/etc/NetworkManager/NetworkManager.conf" add the following line in the "[main]" section:
dns = none