Redirecting all incoming connections to an internal host

[Werner Schalk]

Hi,

I have a single DSL line with a single IP address and I am relatively new to 
FreeBSD (FreeBSD acts as a firewall/router for a local area network). What I 
would like to do is I would like to redirect all incoming connections (not 
only single ports) to an internal host (private IP address). Therefore I 
tried to use natd to reach this goal and set it up exactly as described at 
http://www.freebsd.org/cgi/man.cgi?natd. Unfortunately it is not working 
correctly because I can't reach the services running on the internal host 
from external (e.g. Internet). Is there another way to accomplish this goal? 
I also tried to use a bridge which seemed to work alright but still I was not 
able to access the internal machine...any hints, comments or howtos?

Bye and thanks,
Werner.