Ethereal currently runs on most UNIX platforms and the various Windows platforms. It requires GTK+, GLIB and libpcap in order to run.
Binary packages are available for at least the following platforms:
AIX
Tru64 UNIX (formerly Digital UNIX)
Debian GNU/Linux
Slackware Linux
Red Hat Linux
FreeBSD
NetBSD
OpenBSD
HP/UX
Sparc/Solaris 8
Windows 2000, Windows NT and Windows Me/98/95
If a binary package is not available for your platform, you should download the source and try to build it.