Difficulty Connecting

Hi all, I just downloaded the WOTLK client from the website and am trying to connect to Icecrown. Right as the "Retrieving character list" box appears, I get a "disconnected from the server" box. I've made sure both my realmlist.wtf and config.wtf say "set realmlist logon.warmane.com" and I've also tried logging in multiple times since I've seen on some other threads it might be the anti-ddos thats causing it and that was the suggested fix.
I also tried pinging logon.warmane.com and www.warmane.com through the command prompt and there doesn't seem to be any issues in the route path.

Does anyone know what might be wrong?