Secure Networks


Hello, I am here to hack into your network!

4.1 TCP/IP and OSI

Imagine if you will, a classroom filled with entry-level web technology students. We have some questions from the audience: “What makes up the Internet?” “What is it?” One answer is TCP/IP. “Oh that tells me a lot! It sounds like some kind of drug!” The next question is, “Where should we start and what level of detail should we go into?” The useful answers to these questions will be answered in this chapter.

TCP/IP is a very complex protocol. There are entire books dedicated to the subject. We need to discuss TCP/IP at some length in order to understand the security ...

Get Internet Security now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.