SSH More Than Port Forwarding

[Jody Grafals]

I've done some neat things in the past using SSH port forwarding, 
offering services from my local server on the internet via my public 
servers. Is there anyway I can forward all the traffic from a single IP 
on my Public server to my local server? Making a new kind of VPS  
(Virtual Public server). I have seen some people offer a this service 
but I can't find any documentation on how to do it. Has anyone done this 
befor with ssh ?

Cheers
Jody