(Tell us a little about the basic contents of the sniffer tutorial so that we can make a decision about what to watch and what to skip. Of course, I hope you can skip as many times as possible. This shows that you have much more knowledge than I do. At the same time, I also collate a lot of them from the Internet. So don't be surprised when you look at them. Where have I seen them here, Where did you come from? That's what I mean. First of all, what I want to introduce to you is Mr. Fan's speech. Why did I start with this? This is because this speech is just a good way to guide you to get started. In the speech, Mr. Fan introduced sniffer and why people who study the Internet should learn. Of course, not only people who study the Internet, but many it people should learn Chapter 8, the basic use and examples of sniffer, in this chapter, you really understand how to use sniffer and operate it in practice again. I hope you can make good use of the last opportunity to operate. Remember: you must do it! The last thing I want to introduce to you is how you understand what you get after using sniffer. This is an example of data analysis. Basically, it is a step-by-step process to get you started, and then to the end, it is a process of asking why. Just understand this. No matter what kind of work you will do in the future, you will be quite good. This document contains the following attachments:)