Day-9: Learn OSI Model in 12 Minutes and Build Your Hacking Lab

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Издатель Oct 16, 2026

Confused by the OSI Model? In this video I explain the 7 layers of OSI with a real example - what happens when you open a website in Chrome, from application layer to physical layer.You will learn how HTTP, TLS, sessions, TCP/UDP, IP routing, MAC, and Wi-Fi cables all fit together, plus how to remember layers with one line, how TCP/IP compresses it to 4 layers, and what attacks happen at each layer.Then we build your ethical hacking lab - Metasploitable 3 + Windows 10 on VirtualBox - so you are ready for web application pentesting in the next video.

What you will learn:

What is OSI model and why hackers must know it
7 layers explained simply with browser example
Encapsulation vs de-encapsulation
Easy mnemonic to remember layers
OSI vs TCP/IP model

Lab setup:

Metasploitable 3 + Windows 10 on VirtualBox with bridged network + SSH access
This is part of my cybersecurity networking basics series for beginners. No fluff, hands-on only.Next: Web application penetration testing lab walkthrough

#cybersecurity #networking #ethicalhacking