Kerio Personal Firewall 2.xx vulnerability

Hi, ever since I discovered antionline I gave developed a increasing interest in security. More so now then before. Upon searching for vulnerabilities in my firewall (KPF) I found this site:

http://ossr.phpwebhosting.com/module...article&sid=62

It apears as if my firewall is vulnerable to a synflood atack. I have done all the tests avaiable at http://www.pcflank.com/ which includes:

Steath test, advanced port scan test, exploits test, browser test and trojan test. I passed all tests except for the cookie test, as I still acept some cookies while blocking third party.

After doing all those tests I felt comfterable with my security, untill I found http://ossr.phpwebhosting.com/module...article&sid=62

I checked my version and I have version 2.1.4 so this is of concern to me. Does anyone know if this has been patched or how I can safely test my system with the synflood atack.

The article says version 2.xx but I cant see them testing all sub versions. Is there some site I can go to to check if I am still vulnerable?