tcptrace is a TCP connection analysis tool. It can tell you detailed information about TCP connections by sifting through dump files. The dump file formats supported are: Standard tcpdump format (you need the pcap library) Sun's snoop format Macintosh Etherpeek format HP/NetMetrix protocol analysis format NS simulator output format NetScout NLANR Tsh Format To see the graphs, you'll also need Tim Shepard's xplot program, available at http://www.xplot.org