Pasmon is a graphical passive network monitor. It provides statistics on every host and TCP connection heard on the specified interface[s], probes the system to find valid devices and provides a toolbar button which activates monitoring each device. Currently stable, but with missing features. Screenshot here.
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Simple parser for tcpdump output. Gives the fields Time, Src Addr, Src Port, Dst Addr, Dst Port, Proto, and Len.
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