CS354 Problem:

Start wireshark on your computer to capture packets and set the wireshark fileter as tcp. In your browser, type the url of a website and click enter. Task : DoS Attacks a. 3-way handshake i. Locate the 3-way handshake messages and take a screenshot that includes the 3 messages and add. ii. What are the sequence numbers and ack sequence numbers of the three messages? b. Find one pair of messages (there is an ACK message followed a data transmission message right before it) between your computer and the web server that hosts the website that you are browsing. i. Take a screenshot of the message pair and add it to the report; ii. Write down the sequence number of the first message and the ack sequence number in the ACK message. Show your verification that the ack sequence number is equal to the sequence number of the first message + length of the first message.