RHEL 9 must be configured to prohibit or restrict the use of functions, ports, protocols, and/or services, as defined in the Ports, Protocols, and Services Management (PPSM) Category Assignments List (CAL) and vulnerability assessments.
An XCCDF Rule
Description
To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable or restrict unused or unnecessary ports, protocols, and services on information systems.
- ID
- SV-257940r958480_rule
- Version
- RHEL-09-251035
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Update the host's firewall settings and/or running services to comply with the PPSM CLSA for the site or program and the PPSM CAL.
Then run the following command to load the newly created rule(s):
$ sudo firewall-cmd --reload