Linux (RedHat, SuSE, Slackware, Mandrake), BSD (Free, Net, Open), Windows (9x/ME, NT4/2000/XP), AIX, Compaq Tru64, HP-UX, Irix, MacOS X, SCO, Solaris
Ethereal is one of the most popular sniffers available. It performs packet sniffing on almost any platform (Unix, Windows), in both real-time (live), and from saved capture files from other sniffers (NAI’s Sniffer, NetXray, tcpdump, and more). Included with this program are many features such as filtering, TCP stream reconstruction, promiscuous mode, third-party plug-in options, and the capability to recognize more than 260 protocols. Ethereal also supports capturing on Ethernet, FDDI, PPP, token ring, X-25, and IP over ATM. ...