Ethereal is a free packet sniffer that allows you to capture traffic on a local area network.
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Ethereal is a free packet sniffer that allows you to capture traffic on a local area network.
It can be used on a variety of operating systems and is available at www.
ethereal.com.You must also install the WinPcap packet capture driver, which can be obtained from http://winpcap.mirror.ethereal.com/.
After starting a capture from Ethereal, start a TCP-based application like telnet, FTP, or http (Web browser). Can you determine the following from your capture?
a. Source and destination layer 2 addresses (MAC)
b. Source and destination layer 3 addresses (IP)
c. Source and destination layer 4 addresses (port numbers)
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