1. What is the IP address and TCP port number used by the client computer (source) that is transferring the file to gaia.cs.umass.edu? To answer this questio n, it’s probably easiest to select an HTTP message and explore the details of the TCP packet used to carry this HTTP message, using the “details of the selected packet header window” (refer to Figure 2 in the “Getting Started with Wireshark” Lab if you’re uncertain about the Wireshark windows).

Ans: IP address:192.168.1.102 TCP port:1161

2. What is the IP address of gaia.cs.umass.edu? On what port number is it sending and receiving TCP segments for this connection?

Ans: IP address:128.119.245.12 TCP port:80

If you have been able to create your own trace, answer the following question:

3. What is the IP address and TCP port number used by your client computer

(source) to transfer the file to gaia.cs.umass.edu?

ANS: IP address :10.211.55.7 TCP port:49265

4. What is the sequence number of the TCP SYN segment that is used to initiate the TCP connection between the client computer and gaia.cs.umass.edu? What is it in the segment that identifies the segment as a SYN segment?

ANS: sequence number: 0 Syn Set = 1 identifies the segment as a SYN segment