[Guy Harris <guy@xxxxxxxxxxxx>]

On Fri, Oct 17, 2003 at 11:07:40AM -0400, Preston Williams wrote (in
HTML; not everybody's mail reader handles HTML mail well, so use
plain-text mail if possible):

> I'm fairly new to Ethereal and recently loaded it up on one of my 
> machines.  I opened Ethereal, hit capture, start, and placed the
> source and destination port in filter box.

Unless you put those ports into the filter box in the form

	src port {source port} and dst port {destination port}

that's an error.  You can't put just the port numbers there.

See the tcpdump manual page for the capture filter syntax.  If you're on
a UNIX-flavored system, try "man tcpdump"; if you're on Windows, see the
WinDump man page on windump.polito.it.