Network Traffic Analysis: A Computer Science Assignment, Fall 2024

This computer science assignment analyzes network traffic using Wireshark, focusing on the protocols used when visiting a webpage. It involves identifying the different protocols (MDNS, TCP, HTTP) and determining the time taken for an HTTP request to complete. The assignment also requires finding the IP addresses of the visited URL and the user's computer. The provided solution details the steps and findings, including the specific IP addresses and timestamps. The assignment underscores the importance of understanding network protocols and traffic flow in computer science, providing a practical application of these concepts. Desklib provides this and other solved assignments for students.

DIRE DAWA UNIVERSITY
INSTITUTE OF TECHNOLOGY
SCHOOL OF COMPUTING
DEPARTMENT OF COMPUTER SCINCE
GROUP ASSIGNMENT OF COMPUTER SECURITY
1

1) List the different protocols that appear in the protocol column in the unfiltered
packet listing window in the Wireshark Interface.
Answer
According to above screenshot, for this webpage downloading process, at first,
the TCP (transport layer) connection was established between the client and
the server. Finally, the HTTP (application layer) connection was established
based on the TCP connection which established in step 1.
Thus, the 3 different protocols could be MDNS, TCP and HTTP.
2

2) How long did it take from when the HTTP GET message was sent until the
HTTP OK reply was received for the webpage you visited in your web
browser?
Answer
According to above screenshot, the GET request was arrived at Aug 11, 2021
11:25:03.011482000 Pacific Daylight Time.
3

According to above screenshot, the HTTP OK is arrived at Aug 11, 2021
11:28:05.924646000 Pacific Daylight Time.
Therefore, the time took from HTTP GET to HTTP OK is .924646000
‐ .011482000 = 0.913164 seconds.
4

3) Write the Internet (IP) address of the URL you visited?
Answer
The IP address of the URL we visited is 213.55.95.15 and it’s displayed in the
below screenshot as source address. And the URL is URL: http://aau.edu.et
they are shown in below screenshots.
5

6

4) Write the Internet (IP) address of your computer?
As shown in the below screenshot my computer IP address is represented with destination when
it is in ok and its 10.235.92.134.
7

5) Print the two HTTP messages displayed in Wireshark Interface after you had visited the above
URL through your web browser.
Answer
8