Скачать или смотреть Part 21, 🔐 INTRODUCTION TO NETWORK SECURITY | Firewalls & AAA Explained 🚨🔥

The internet is not friendly.

Every second, networks are being scanned, attacked, and exploited — and firewalls and AAA are the first line of defense.

In this hands-on lab video, I break down Network Security fundamentals, focusing on:
🔥 Firewalls
🔐 AAA – Authentication, Authorization, Accounting

🚀 What you’ll learn in this video:

Why network security is non-negotiable

How firewalls inspect and control traffic

Packet filtering vs Stateful vs Application firewalls

Why firewalls block traffic by default

How AAA controls who can access network devices

Authentication (Who are you?)

Authorization (What are you allowed to do?)

Accounting (What did you do?)

💡 Think of network security like a high-security building:
Locks, guards, cameras, access badges — all working together to protect what matters.

This lab is perfect for:
✅ CCNA & Networking students
✅ Cybersecurity beginners
✅ Anyone learning Cloud, SOC, or Enterprise Infrastructure

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