Active ftp actually requires two ports.  Traditionally, those are ports
21 (the standard) and 20 (ftp-data).  You'll also need the ip_nat_ftp
module loaded.

j


On Sun, 2003-09-14 at 11:49, david wrote:
> Friends
> 
> I know that when I use an FTP client from within the NAT, and access an 
> external FTP server,
> all works with both active and passive provided the FTP server uses the 
> standard port 21.
> 
> I also think it works just fine for passive mode if the FTP server uses a 
> non-standard port.
> 
> I think it fails if in active mode if the FTP server uses a non-standard port.
> 
> I wonder if the guru's out there would:
> 
> 1)  Confirm or correct my observations;
> 
> 2)  Figure out how I can get to an FTP server using active when the server 
> uses a
> non-standard port.
> 
> Much thanks.
> 
> David

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