The mibbit IRC widget which replaces the Java applet on http://www.gamesurge.net/chat allows you to connect to GameSurge without using any ports but the regular http port (80) which is open almost everywhere. Just in case you prefer the Java applet, it is still available at http://www.gamesurge.net/javachat.For those who want to add the widget to their website: either you can link the one on the GameSurge site and pass channels via the URL (/chat/CHANNELNAME; e.g. /chat/gamesurge for #gamesurge or /chat/CHANNELNAME/DEFAULTNICKNAME)...
I use Cygwin on Terminator, to ssh to a remote shell running irssi on screen.