I am running Kaspersky 2012 (sorry cannot upgrade to 2013/14 since my company VPN requires a viruskiller but does not recognize those).
I am using ChatZilla to connect to IRC, namely irc.freenode.net. When I try to connect, I get a balloon popup linking to this explanation:
I do not know where to allow this connection. Strangely enough, sometimes it allows to connect to IRC after the first attempt, but right now it just drops into a reconnection-attempt loop.
I check the Kaspersky setting for exceptions but could not figure out how to set this as one. Any help there is appreciated.