In this lesson, we break down the OSI (Open Systems Interconnection) Model, a fundamental concept in networking. Explore its seven layers — Physical, Data Link, Network, Transport, Session, Presentation, and Application — and understand how each layer plays a role in the communication process. This knowledge is essential for troubleshooting, designing networks, and understanding how VPNs interact with the network stack. By the end of this video, you’ll have a clear grasp of the OSI model and its importance in building and maintaining a secure and efficient VPN infrastructure.
