Iptables, port redirecting ...?

[Ju]

Hi,

i'm looking for some help with redirection of some port on my linux server with iptables.

Here's my configuration:

** A linux machine wich handles an internet connection:
it has 2 network cards --> eth1 192.168.0.254 (local)
--> eth0 noIP, where my modem is attached.
--> ppp0 "internet-adress" which is static ip.

** A windows 2000 machine which handles the ftp-server program (Bulletproof FTP 2.15 ex-G6 ftp):
ot has one network card --> 192.168.0.2 (local)
ftp server is running on port 21.

For now on we receive on the ftp server the connection on the ftp server. It says:
"
connected to 0.0.0.0
sending welcome message
220 Welcome!
disconnected
"

On the client nothing happens, until Time Out...

I hope you can help me,

Thank you very much.