Introduction to Firewalls

Overview

This lab introduces you to the concept of firewalls and their essential role in protecting computer networks. You will learn, in a simple and practical way, how firewalls work to control and secure network traffic. Through easy-to-understand examples and scenarios, you will see how firewalls decide which data is allowed or blocked, and why this is important for keeping systems safe from unwanted access or threats.
Inside this lab

Understand the basic idea of firewalls, their main types, and why they are important for network security.
Learn how a firewall checks and filters network traffic using simple rules.
Explore real-life examples of how firewalls protect computers and networks from harmful data or attackers.
Discover where firewalls are used, from home routers to large company networks and cloud services.
By the end of this lab, you will have a clear understanding of what a firewall is, how it works, and why it is a key part of keeping networks secure. This lab is designed for beginners and does not require any coding or technical setup.