Pearson, Andrew wrote:

>Hi all,
>
>I have a small problem with my network, i wondered if anyone has any suggestions.
>The problem lies with my IIS 5.0 server which is sitting behind a SmoothWall Firewall 
>box.
>When I FTP to the server while on the inside of the network, I get a connection. And 
>when
>I do a GET or a DIR then I recieve the proper response with a file or directory 
>listing... 
>Now, when I access the server from the outside of the network through smoothwall, I 
>still
>get a connection to the server, but this time, whenever I try a DIR or GET, the 
>session 
>freezes and I have to kill it.
>My initial guess is that Smoothwall is allowing a connection through port 21 (which 
>I've 
>allowed access), and I recieve the connection response. But the FTP server is then 
>switching ports
>to 2500 or something similar for data transfer... which I cannot open on smoothwall 
>because
>the port number changes... 
>Has anyone dealt with this before? I've searched on Google to no avail, and also 
>posted on the 
>Smoothwall IRC channel with no success either... 
>
>Thanks.
>
>Andy.
>
>
>
>Andrew Pearson
>Consultant
>ADC Software Systems Division
>  
>
Have you tried passive ftp from the outside.  This should solve the 
problem.  It uses 21 for both control and data.

Kevin


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