This is the message that I get when I try to join.

[17:49] *** Creating connection "flopturnriver"
[17:49] *** -irc.quakenet.org- *** Looking up your hostname
[17:49] *** -irc.quakenet.org- *** Checking Ident
[17:49] *** -irc.quakenet.org- *** Found your hostname
[17:49] *** :sw.de.quakenet.org 465 Les_Worm :As a security countermeasure, all clients connecting from *@*.comcast.net are now required to give a valid ident response on connect. If you use mIRC, open mIRC options, select Connect -> Identd -> Enable Identd server. You may also need to unblock external/internet port 113 in your software or hardware firewall and/or forward it..
[17:49] *** Error: Closing Link: Les_Worm by sw.de.quakenet.org (G-lined)

What do I need to do to get back in? I also don't use mIRC so what they tell me doesn't help.