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Linux Journal: Your Network's Secret Life, Part 5

Aug 12, 2001, 19:45 (0 Talkback[s])
(Other stories by Marcel Gagné)
"Other than my little excursion into xinetd, I've used this series to show you ways in which you can make some sense of the packets flying around your network, and the tools that can help you do that. I started this article by giving you the dictionary definition for "ethereal". Ethereal also happens to be the name of an excellent network protocol analyzer, a powerful tool that lets you see what is happening on your network right now. Ethereal is available for a variety of platforms and is distributed free under the GPL. While it is technically beta software, you'll be amazed at how useful you'll find it.

Ethereal is another of those programs that requires the libpcap packet capture libraries. We've talked about this one before, most recently in the third part of this series. If you don't already have it, check out the libpcap web site at http://www.tcpdump.org. You'll also need GTK+ (likely to be already installed on your system). GTK+ is available from http://www.gtk.org.

Should you decide to save yourself a few steps, a number of precompiled binary distributions exist for Ethereal, including DEBs and RPMs. For the latest and greatest, you can always download the source and build it yourself. Start by paying the Ethereal web site at visit at http://www.ethereal.com. Then extract and build the software."

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