Firewalld in Examples: A Complete Beginner’s Guide
This guide will teach you all you need to know to get started with firewalld to add, change, and remove rules from your firewall zones.
firewalld
Firewalld 1.0 Firewall Management Tool is Here with Big Improvements
Ten years after its first release, Firewalld reached version 1.0. The biggest change is removing Python 2 support.