🚀 go-pugleaf

Hi,

I need to allow connections from the Internet to a particular service on
one of my company's host machines. However, this host must never see, or be
seen, from the Internet!

I would like to setup a Linux PC to act as a sort of proxy to forward IP
packets destined for its own IP address on a certain port on a machine on
another network without exposing this other network and its hosts to the
Internet. How do I go about doing this?

...that is to say;

A host on the Internet MUST think that it is communicating with a service
on a particular port of the Linux PC, but in reality it is communicating
with that service on another host! 

NOTE: Connection to this service will ALWAYS originate from the Internet.
Also, the internal network is using unregistered class C addresses.

Please help - thanks,
   Matthew Bennetts