firewalld in RHEL

firewalld is a Linux utility used to manage firewall rules. In this article, we discuss firewall management using firewalld.

Table of contents.Introduction.Installation.Zones.Ports.Services.Creating zones.Summary.References.Introduction.

A firewall is a set of rules that define whether traffic is allowed through a system.

iptables and firewalld are tools used to manage firewall rules in Linux.

Installation.

To install firewalld on RHEL, we first update the system:

$ sudo dnf update

N...