hw1_ans - ECE3076 Homework 1 Answers Due: Wed. Jan. 24,...

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ECE3076 Homework 1 Answers Due: Wed. Jan. 24, 2007 (in class) The best way I found to learn about networks was to look at real packets and the details of the packet structure. There is now a very good packet sniffer program, "wireshark", that can be easily installed on MS Windows PCs. It is the successor to "ethereal" that has been around for many years on Linux and MacOS (but was a bear to install on Windows). Download the appropriate installer from http://www.wireshark.org / and install on your PC. For more information, look at http://en.wikipedia.org/wiki/Wireshark and my notes on filters in http://www.csc.gatech.edu/copeland/jac/3076/info /. 1. After you get wireshark running , use your browser to look at www.gatech.edu (see below*) a. What is the IP address of www.cnn.com? _ 64 __._ 236 __._any__._any_ or test with http://answer/ b. What is a TCP port number of your PC for this exchange ? __Any > 2048 ___ c. Is it the same for all TCP connections in this session (yes/no) ? ____ no ________ d. What is the TCP port number of www.cnn.com for this exchange ? _______ 80 __________ e. Is it the same for all TCP connections in this session (yes/no) ? _________ yes _______ f. Is it usually the same when you go to other Web sites (yes/no) ? ______ yes ________ g. What is the Ethernet address of your PC?
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hw1_ans - ECE3076 Homework 1 Answers Due: Wed. Jan. 24,...

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