firewall-cmd

Additional Notes

firewall-cmd is a network command used to manage firewalld firewall rules. It manages firewalld rules using zones and services instead of raw iptables rules. Changes can be made permanent with --permanent or applied only to the runtime.

Syntax

firewall-cmd [options] command

Parameters

• options: Flags that change how firewall-cmd behaves.
• service/port: Service name or port to manage.

Common Options

• --help: Show command help when supported.
• --version: Show version information when supported.

Examples

firewall-cmd --help
man firewall-cmd

Practical Notes

Options can vary by distribution and package version. Use man firewall-cmd, firewall-cmd --help, or the package documentation for exact syntax.