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This chapter is from the book

This chapter is from the book

8.7 Other Packet Analyzers

Though tcpdump is the old, reliable standard for analyzing packet data, some newer tools offer attractive new features. For example, the Ethereal program, included with modern Linux distributions as ethereal, breaks down protocol data and displays it in a convenient graphical interface. It can capture live data or it can be run on a tcpdump datafile created with the -w option. This is a useful tool for digging deeply into the guts of a particular network protocol. More information on Ethereal is available at http://www.ethereal.com/.

Another popular tool is Snort, which is an intrusion detection system. Snort grabs data like tcpdump does but then analyzes it at a much higher level. It attempts to detect suspicious network traffic of all sorts, including various forms of attacks and probes. It is available from http://www.snort.org/.

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