Introduction to Firewalls | The First Line of Network Defense

Introduction to Firewalls | The First Line of Network Defense

A firewall is one of the most fundamental security controls in any IT environment.

It determines what traffic is allowed, what is blocked, and how systems communicate securely across networks—forming the first barrier between trusted and untrusted networks.

This introduction helps you understand

What a firewall is and why it matters

How traffic filtering actually works

Different types of firewalls used in modern networks

Basic firewall rules and policies

Where firewalls fit within cybersecurity and networking architectures

A strong firewall foundation is essential for anyone starting out in IT, Networking, or Cybersecurity—and it’s a must-know skill for SOC analysts and blue-team engineers.

Comment “Firewall” and send a connection request to get access to the full guide and hands-on cybersecurity training.

#CyberSecurity #Firewall #NetworkSecurity #InfoSec #ITBasics #SOCAnalyst #BlueTeam #TechLearning