A firewall is an essential component of system security, acting as a barrier between your Linux system and potential threats from the internet. Linux provides two powerful tools for managing firewalls: iptables and firewalld. While iptables offers granular control over network traffic, firewalld provides a more user-friendly and dynamic way to manage firewall rules. This tutorial will guide you through setting up and managing a Linux firewall using both iptables and firewalld.
A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predefined security rules. It acts as a gatekeeper, allowing or blocking traffic to protect your system from unauthorized access.