IP Forwarding beetween Linux & WinNT

Hi.

I have posted a message in news group and a member of experts-exchange have reply me to submit my problem :)

Well :

Like you know the NT servers need protection :)

I am trying to protect a NT Web server behind a Linux server. My config is
simple :

I have a linux box that masquarade the NT server. So the NT server have
192.168.200.2 for IP address, on my linux box i have Two IPs add assignated
with IP Aliasing : 134.***.***.55 & 134.***.***.56

Now it is simple, i want that, when a incoming http request arrive on the
134.***.***.56 IP add, this request is redirect to the 192.168.200.2 IP of
the NT web server Behind the linux box. Because all the web structure of the
site is on the NT box ( :/ )

So i thing that with one or two ip forwarding rules i can do that. But in
fact i can not do that with my rules because i do not know how to tell to
the ipfwadm utility to do that.

With ipfwadm you can specify Source and Destination but not redirection :/
with a rule like : ipfwadm -F -a m -V 134.***.***.56 -W eth0:1 -b -P all -S
0.0.0.0/32 -D 192.168.200.2/32 it doesn't works

my linux config is : Linux RedHat 4.2 with 2.0.32 kernel.

if someone have any idea it will be welcome :)

please answer me to : acassen@ifhamy.insa-lyon.fr

--
Cassen Alexandre
Engeneer student in the INSA de Lyon