I have been investigating my ftp problem a bit more, and it is related to 
PASV ftp connections.  I have PASV FTP checked in the FW1 Properties, and 
my ftp server is IIS4.

When I try a client such as ws_ftp, PORT connections work fine.  PASV fails 
with a rejection at the firewall.  We tried IE5 and it worked, but Netscape 
failed.

What seems to happen is the client (outside the firewall) opens a 
connection to the ftp server.  The client logs in, and after PASV is sent, 
the ftp server tries to connect back to the client with a source port of 
ftp and the service is listed as the source port for the client's initial 
connect.  The firewall rejects this.

Why is this not working?

.. Jason Badry

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   APPRO CHPRJ   Jason Badry, BSc.           The APPROACH Project
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