RHEL 10 must disable the chrony daemon from acting as a server.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-280960 | RHEL-10-200542 | SV-280960r1165235_rule | CCI-000382 | medium |
| Description | ||||
| Minimizing the exposure of the server functionality of the chrony daemon diminishes the attack surface. Satisfies: SRG-OS-000096-GPOS-00050, SRG-OS-000095-GPOS-00049 | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Details
Check Text (C-280960r1165235_chk)
Verify RHEL 10 disables the chrony daemon from acting as a server with the following command:
$ sudo grep -w port /etc/chrony.conf
port 0
If the "port" option is not set to "0", is commented out, or is missing, this is a finding.
Fix Text (F-85426r1165234_fix)
Configure RHEL 10 to disable the chrony daemon from acting as a server by adding/modifying the following line in the "/etc/chrony.conf" file:
port 0
Restart the chronyd service with the following command for the changes to take effect:
$ sudo systemctl restart chronyd