Need Help. Cannot Play DF:LW or DF:TFD

[DemunVirus]

Ok this all started when i got comcast about 2 mounths ago. I could play the games and host at first. Then about a week after having comcast i couldnt play the game online. Saying cannot find server when i try to play it online. I can host but my server will not show up on the novaworld public servers. Cuz my clan said server is not up when it was. So i tried going to the Lobby's on Internet Explorer to see if the game was the problem. Well on I.E. still cannot find server. So i go on a proxy website and go to the lobby on it and i can veiw the lobby on proxy's. Well this problem lasted about 2 weeks then all of a sudden it started working again. Then 5 days ago same problem is happening. And now my own website is blocking my ip address saying im trying to hack it. Is this all leading to a IP problem? Novalogic said it wasn't them and said they didn't ban my ip. I Have No Firewall on this computer.

Any suggestions? Please help if you can.