La procédure est là :
Hosting a game ¶
In the first screen you can choose a player name and a name for your server (unless you really want to change them just accept the defaults). Then click Continue. For other players to be able to connect to your game you need to tell them your IP number, if you don't know how to find out what your IP is you can go tohttp://whatismyip.org/ (currently seems to be offline, you can use
http://www.whatismyip.com/ instead)and just copy the number there. In the next dialog choose what map you want to play on by clicking on it's name in the list, and select which slot you want each player to be in (currently you have to know which player is which civilization and where on the map each player starts). You can chat with other players who have connected to your game, as well as see who's connected. When you've chosen which map to play etc click the Start game! button and the map loads.
Joining a game ¶
You may enter a name you want to be displayed to other players here, as well as the IP from the host (see above), then click Continue. You can see a list of available maps etc, but it's only the host who can change what map you will play on. You can however chat and there suggest a map if you have a favorite. When the host clicks the Start game! button the game will start.
Il faut également ouvrir le port 20595 de la box