Simple software for port forwarding and routing w/o a hardware router
...The port forwarding rules can be imported/exported into XML files. Vivid user interface indicates in real time which rules are triggered by the traffic. The program has its own proprietary traffic management engine (network device driver) which does not make changes to the operating system, instead it simply filters the traffic. Hence, it can work side-by-side with lots of other network and security software.
This project is dedicated to finding best of breed open source monitoring products, tools, sysadmin tools and overall systems management stuff. We will take all these components and make them work together.