Terraria 1.0.4 lan problem?

well . you know the old terraria versions in which you had to open 2 instances of terraria and in one of them in which you start a server and it says running on port ..... ? well you have to start a server with terrariaserver.exe or something so its says running on port : ...... and then you can click host & play in terraria without the serverterraria cuz that was just to know what port your server is using ... cuz in the 1.0.3 update log i think they added this :,, now players can connect to servers using more ports than just 7777 " or sumthin .... that happened to me aswell