Unless you have enough servers or listeners on your end of the connection to make every port open, it isn't going to happen. Also, what you're asking for is considered a huge security hole for any network. There's a reason NAT exists besides keeping IP addresses from being exhausted.
What you're talking about is the DMZ. It only works on one device. You're best to consider Universal Plug and Play, which, while a security hole at least does the port forwarding for you automatically most of the time and cleans up after itself if told to do so, and does not send ALL traffic coming from the Internet to one device where you're relying on that device to be propertly protected. UPnP does like to bug out and crash routers however, so nothing beats manually port forwarding.
