You have to do some port forwarding. Amsn should list the port it wants to use. You need to configure your modem/router to forward the port suggested by AMSN in the connection tab of the Preferences to your machine using the TCP protocol. Then amsn is a happy bunny. If there is only one connection possible, that is you cannot connect two machines simultaneously, then maybe it's an ISP thing or there's some sort of proxy blocking you. Based on the response of AMSN, I'd explore the port forwarding option first.
Last edited by jdkaye; 07-27-2009 at 03:47 AM.