# Lab 1

## Steps
* Step 1 : 打開瀏覽器（建議用無痕模式)
* Step 2 : 打開 Wireshark (建議以系統管理員執行)，開始抓 Packet
* Step 3 : 複製下方網址，貼上網址列 Enter</br> http://gaia.cs.umass.edu/wireshark-labs/INTRO-wireshark-file1.html
* Step 4 : Filter 輸入 http
* Step 5 : 找出 HTTP GET
* Step 6 : 停止抓 Packet

## Questions

#### 1-1 List 3 different protocols that appear in the protocol column in the unfiltered packet-listing window in step 7 above.

* TCP
* HTTP
* ARP

#### 1-2 How long did it take from when the HTTP GET message was sent until the HTTP OK reply was received?


#### 1-3 What is the Internet address of the gaia.cs.umass.edu? What is the Internet address of your computer?


#### 1-4 Screenshot the two HTTP messages (GET and OK) referred to in question 2 above.