Ftp-WG: PASV and Snap servers

Me, I know (almost) nothing, but I'm curious.

Can you share more of the trace of Fetch talking?  The
more the better, including at least the time from the
PASV command to a little past the 450 reply?

Can we contrast that failing trace with the trace of
what does work, with such as Mac OS X ftp -d?

Pat LaVarre

-----Original Message----- 
From: Jim Matthews
[mailto:[email protected]] 
Sent: Wed 12/18/2002 8:42 AM 
To: FTPEXT Working Group 
Cc: 
Subject: Ftp-WG: PASV and Snap servers

I'm the author of the Mac FTP client Fetch, and a user
has reported trouble connecting in PASV mode to a Snap
server.  The PASV command works, but when Fetch issues
any data transfer command and tries to make the data
connection the response is:

450 Data transfer not implemented for client default
data port. Need 'PORT' command first.

Snap has a web page about this problem:

http://www.quantum.com/AM/support/nas/manuals/reference_guide/Compatibility/compatibility_ftp3.html

On that page the mention that some FTP clients are
compatible with Snap servers in PASV mode, including
WS_FTP and Internet Explorer for Windows.  My testing
suggests that they can add the OS X command-line ftp
client to that list.  But I've been unable to tell
what I'm doing differently from the command line
client.  Does anyone know the secret to using PASV
with Snap servers?

Thanks,
--
Jim Matthews
Fetch Softworks
http://fetchsoftworks.com


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