The problem could be that you have a router. However, there is a way to fix the problem by forwarding your ports. If you have a "Linksys WRT110" router, then click here. If you have a different router, then click here. If neither of those solutions worked, then I recommend you post your tech support problem on several different forums (I recommend you post it on the SS Free, Forum Unity, WarBoards, Trollz, Explosmertacular, the new Battle.net forums, the old Battle.net forums, StarEdit Network, Maplantis, BlizzForums, Creep Colony, BattleReports, Godz Minnionz, StarCraft.org, Battle Forums, Reenactor Entertainment, Facepunch Studios, Lethal Injection, StarCraft Meetup, and D3Scene.ru) and I also recommend you contact Blizzard Entertainment. To contact Blizzard Entertainment you can e-mail "support@blizzard.com" (without the quotation marks), call "(949) 955-1382", go to the channel "Blizzard Tech Support" (without the quotation marks) on the U.S. West gateway, or send them mail at "Blizzard Entertainment | P.O. Box 18979 | Irvine, CA 92623 | United States" (with | meaning go to the next line). I hope this helped.