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