I believe the guy was referring to a Windows firewall called Zonealarm, its very useful in detecting programs which are trojans and that sort of thing, although it isn't the best thing to have when you come under a DoS attack.
Zonealarm itself is able to detect when a program is wanting to act as a server, to say for example. serve files and so forth, with programs like IE and Netscape the only time they are wanting to act as servers is when FTP'ing what i am guessing is that K-Meleon is just wanting to act as a server straight away instead of IE or Netscape only wanting to act as a server when you connect to an FTPD.
My advice is, allow it to access the internet on Zonealarm (the tick boxes for `Local` and `Internet` and don't click on the tick box for server, unless you are wanting to connect to a ftp server in which cause tick it.)
I guess i should do a netstat or something to see if K-Meleon is reporting to some dastardly unknown server like NS6 does with trying to connect to a AOL server when you first start it up.