What is "Tcpillust"? Tcpillust is an X11 based graphical analysis tool for tcp connection. It takes tcpdump file(s) specified at the command line and draws pictures like figures in the ``TCP/IP Illustrated'' series. (see sample images below) Tcpdump files fed to by tcpillust should contain only data for a single TCP connection. If other data are contained in the tcpdump files, tcpillust can't