‫Hello, thanks for joining me and welcome to the network fundamentals course.
‫Let me give you an early heads up this course will give you theoretical information about computer networks
‫in general, so we won't be doing a lot of hands on demo this time.
‫Let me point out something else.
‫I'm not going to claim to teach you everything about networking.
‫Instead, I'll explain the basics of networking in the most common protocols from the cyber security
‫point of view.
‫You see, a penetration tester needs to know the fundamentals of computer networking.
‫Makes sense, right?
‫So here's the content of the course.
‫First, we'll have a brief look at the networking concept that we're talking about the two most well-known
‫network models, the Osai reference model and the TCP IP reference model.
‫And then we're going to learn each of the network layers and their most important protocols in detail
‫data, link layer, network layer, transport layer and finally, the application layer.