Wireshark : Java Glossary

2008-08-05 by Roedy Green ©1996-2009 Canadian Mind Products
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Wireshark: A free TCP/IP protocol sniffer formerly known as Ethereal. It has support for hundreds of protocols that piggyback on TCP/IP, formatting the messages it captures. By defaut it captures all traffic going through your ethernet card, not just TCP/IP. Its main limitation is it cannot monitor purely local traffic. It must be going to some other machine. I have not figured out how to get it to decode gzipped webpages. I could not figure out how to put it on their wish list.
Using a simple capture filter of tcp port 80 will show you just the HTTP stuff. A capture filter determine what raw data to capture. You later can apply any of a number of display filters, e.g. http.request.method == "GET" to further reduce the amount of material to look at. When you find what you want, right click and tell it to decode and follow the TCP/IP stream.
IP
sniffer
TCP/IP
Wire Shark HTTP field names for display filters

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