pdump-0.8.tar.gz

Pdump is a sniffer written in perl which dumps, greps, monitors, creates, and modifies traffic on a network. It combines features from tcpdump, tcpkill, ngrep, tcptrace, dsniff (and its webspy and urlsnarf), pfilt, macof, and xpy. It is able to do passive operating system detection/fingerprinting and can also watch packet streams and then create it's own spoofed packets to hijack or kill TCP connections. It understands tcpdump-like and perl-like syntax and allows easy modifications via a plug-in system. The packet display is easily configurable. Man page available here.