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A Packet Sniffer is a program that can record and filter network traffic on a machine or network switch. Most of these programs (on [Linux] at least) use the pcap (__P__acket __Cap__ture) library. [Snort] includes packet sniffing capabilities. tcpdump(8) is a command line sniffer. A pretty-yet-powerful packet sniffer is [Wireshark] (née [Ethereal]), which uses a point-and-click [GUI]. Handy Hint: If you are on a "small footprint" machine, where you have access to tcpdump, but not ethereal, you can use tcpdump with -w filename, and then load filename into ethereal on another machine for a more detailed analysis. ---- Part of CategoryNetworking. See also packet(7).
2 pages link to
PacketSniffer
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Ethereal
Wireshark
