Labs for COMP352: Computer Networks

• Please see the course schedule for due dates.
• Instructions for running Wireshark:
  • On the Macs in Room 231 (doesn't work on other Macs in Tome). 1. Launch the X11 application from the applications folder. 2. If an X11 terminal window did not open automatically, open one by choosing "Terminal" in the X11 "Applications" menu. (Note: this terminal window is different from the regular terminal window you can open from the machine's application folder. Do not use a regular terminal window.) 3. enter the command "/sw/bin/wireshark"
  • You can install and run Wireshark on your own computer by following the instructions at www.wireshark.org
• Computer networks are extremely complex and rarely behave exactly as you expect; Wireshark is an evolving piece of software. As a result, many of these labs do not function precisely as the authors intended. Do not be concerned if you encounter unexpected results. Make an honest attempt at every question, and record the results that you obtain, whether or not they agree with expectations. In addition, the authors provide packet traces that can be used instead of collecting your own trace. Don't hesitate to use these if necessary.
• Lab L1: Consists of two K&R Wireshark labs: "getting started", and "HTTP"
• Lab L2: Consists of the K&R Wireshark lab "DNS"
• Lab L3: Consists of the K&R Wireshark lab "TCP"
• Lab L4: Consists of the K&R Wireshark lab "Ethernet and ARP". A hint sheet is provided.
• Lab L5: Consists of any K&R Wireshark lab that has not yet been completed (i.e. one of IP, ICMP, DHCP, 802.11, SSL, UDP). Choose the one that looks most interesting to you. The rubric for grading this lab will be extremely lenient: a perfect grade will be awarded for an honest attempt at all questions. If you encounter difficulties, give a brief description of the difficulties, and move on to the next question.