is this review of Kerio PF (not the latest version btw) reliable: http://www.matousec.com/projects/windows-personal-firewall-analysis/Kerio-Personal-Firewall-4.3.246/ they seem to be pretty damning about it, and even refer to Kerio as: a cute packet filter and not a personal firewall as its vendor (and its name) claims. It is more like 'A Hacker's Best Friend'. We can hardly imagine a personal firewall with worse level of security. apologies if this has been discussed before. i did a quick search in this forum but couldnt see a thread dedicated to it, just some mentions in other threads.