TOSS 5 must configure a DNS processing mode set in Network Manager.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-282679 | TOSS-05-000205 | SV-282679r1201334_rule | CCI-000366 | medium |
| Description | ||||
| In order to ensure that DNS resolver settings are respected, a DNS mode in Network Manager must be configured. | ||||
| STIG | Date | |||
| Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide | 2026-04-01 | |||
Details
Check Text (C-282679r1201334_chk)
Verify TOSS 5 has a DNS mode configured in Network Manager.
$ NetworkManager --print-config
[main]
dns=none
If the dns key under main does not exist or is not set to "none" or "default", this is a finding.
Fix Text (F-87145r1201333_fix)
Configure NetworkManager in TOSS 5 to use a DNS mode.
In "/etc/NetworkManager/NetworkManager.conf" add the following line in the "[main]" section:
dns = none
Reload NetworkManager for the change to take effect.
$ sudo systemctl reload NetworkManager