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From: dzoey@TERMINUS.UMD.EDU.UUCP
Newsgroups: mod.protocols.tcp-ip
Subject: Re: FTP client program
Message-ID: <8704121733.AA10973@terminus.UMD.EDU>
Date: Sun, 12-Apr-87 12:33:42 EST
Article-I.D.: terminus.8704121733.AA10973
Posted: Sun Apr 12 12:33:42 1987
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No doubt you will get many replies, but here's the info on how to listen
for a data connection.

The well know data port for FTP is port 20.  You can change this by
issuing the PORT command to the host before you issue a STOR or
RETR.  I forget the exact syntax for the PORT command, but it's in
the RFC.

example

user wants to stor data:

client: PORT x
server: {200,250} PORT command okay
client: listen on x
client: STOR foo
server: {150,125} Establishing connection {opens a tcp connection to port x}

If you want more info, I'll be glad to help.
				Joe Herman

dzoey@umd5.umd.edu