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James,
You will have to allow ports 20 and 21 through your firewall.
Next, in theory, you would port-forward ports 20 & 21 on the MASQ
server to your Internal server.
BUT.. this WON'T work today. The stock ip_masq_ftp module doesn't
support portfw'ed FTP connections. There is work going on to
get this working but there aren't any proven solutions yet.
--David
>I have configured a Masq box using the 2.0.36 kernel, ipfwadm, and all
>appropriate patches. This box will be used only as a masquerading box that
>will also forward ftp traffic to an internal server.
>
>This box will sit behind a firewall.
>
>As far as the linux box is concerned, everything works great. I would like
>to know what ports I need to open on my firewall that will allow FTP traffic
>to work correctly. I have already opened port 21.
>
>This allows me to get connected to my FTP server, but it can't establish a
>data connection. To verify that my Linux box is configured correctly, I
>tested an FTP connection from outside the linux box , but inside my
>firewall, and everything works great.
>
>Do I need to open port 20 on my firewall?
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| David A. Ranch - Linux/Networking/PC hardware [EMAIL PROTECTED] |
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