STIGQter: STIG Summary: Red Hat Enterprise Linux 8 Security Technical Implementation Guide Version: 2 Release: 8 Benchmark Date: 01 Jul 2026:

RHEL 8 must disable the chrony daemon from acting as a server.

DISA Rule

SV-230485r1017269_rule

Vulnerability Number

V-230485

Group Title

SRG-OS-000095-GPOS-00049

Rule Version

RHEL-08-030741

Severity

CAT III

CCI(s)

• CCI-000381 - Configure the system to provide only organization-defined mission essential capabilities.

Weight

10

Fix Recommendation

Configure the operating system to disable the chrony daemon from acting as a server by adding or modifying the following line in the "/etc/chrony.conf" file:

port 0

Check Contents

Note: If the system is approved and documented by the information system security officer (ISSO) to function as an NTP time server, this requirement is Not Applicable.

Verify RHEL 8 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 missing, this is a finding.

Vulnerability Number

V-230485

Documentable

False

Rule Version

RHEL-08-030741

Severity Override Guidance

Note: If the system is approved and documented by the information system security officer (ISSO) to function as an NTP time server, this requirement is Not Applicable.

Verify RHEL 8 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 missing, this is a finding.

Check Content Reference

M

Target Key

2921