PFPort Checker If you want to host a server in games you need to add the ports in your router(modem). But how you can check if the port is open or not? The solution: PFPort Checker
The programm is very easy to use and to install.
1. Download the program here.
2. Unpack the file and install it.
3. Open the program.
4. After opening you must see a window. Add there the port which you want to check and select the protocol TCP or UDP. The port for Flatout 2 is: 23756 UDP. Try this first. If it is open than its ok, if not than you must add this port in your router(modem). For a full list of game ports click here.
If you don´t know how you can add ports in your router than click herefor a FAQ about this.