Ashpoint <Ashpoint@discussions.microsoft.com> wrote:

> I have set up the ADSL router to port forward Port 21 to the server IP
> address.

"Robin Walker [MVP]" <rdhw@cam.ac.uk> wrote in message
news:OQ7vJi1mGHA.2312@TK2MSFTNGP03.phx.gbl...
> Ashpoint <Ashpoint@discussions.microsoft.com> wrote:
>
>> I have set up the ADSL router to port forward Port 21 to the server IP
>> address.
>
> If you are trying to use IIS behind a NAT router, then you might as well
> give up now, and use a different FTP server that can do PASV-mode behind
> NAT properly. IIS cannot serve passive-mode connections behind NAT.
>
> If you can configure your FTP clients to use PORT-mode FTP only, then it
> might work, but you might then have problems if your FTP clients are
> themselves behind NAT routers, which is very common.
>
> --
> Robin Walker [MVP Networking]
> rdhw@cam.ac.uk
>