OL 9 must disable the chrony daemon from acting as a server.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| low | V-271697 | SRG-OS-000096-GPOS-00050 | OL09-00-002320 | SV-271697r1184202_rule | 2026-02-17 | 1 |
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
ℹ️ Check
Note: If the server is serving as an NTP server, this is not applicable.
Verify OL 9 disables the chrony daemon from acting as a server with the following command:
$ 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
Configure OL 9 to disable the chrony daemon from acting as a server by adding/modifying the following line in the /etc/chrony.conf file:
port 0