So, in this article i am just going to share some of my experience using PC Tools Firewall. First of all,upon installation, you would probably see some warning like: This driver has not passed the Windows Logo Test ; just ignore it and continue with the installation. Next, just as other firewalls out there, free or commercial, PC Tools Firewall also give out warning dialogs, just like in the image below: When you first start using PC Tools Firewall, you should expect a lot of this dialogs. But this is good, at least you know that the firewall is working :) There are a couple of test that has been done by other users and myself to see how good PC Tools Firewall actually is, it was just some basic leak test, but surprisingly, PC Tools Firewall passed them all with flying colors. Though it was just a basic leak test, but be surprise that there are some commercial firewalls that didn't passed it (you don't have to ask about the Windows firewall, everybody know that it is there only for show). But with great protection, comes a great penalty, well, not much of a penalty, but still it is a pain in the ass. This is only for P2P users or similar (Kazaa,Limewire,Mirc et cetera) - you need to include a few filtering rules (depending on how many P2P application you have) in order for the P2P application to run properly. For example, if you didn't add additional rules to allow your BitTorrent client to connect to the net, PC Tools Firewall will certainly block it from downloading and uploading any files. Not good! But actually, it is the same in all firewall system (the good ones), you need to add the filtering rules for certain type of application to function. As a conclusion, i would say that this free firewall from PC Tools is definitely a recommendation, especially if you are still using Windows Firewall. Not only it is produced by a reliable company but also the firewall itself is functional as expected. If you are already using some other firewall system, then it is totally unnecessary to change, unless you want to give it a try. But again, if you are currently using Windows Firewall, then it is best that you get yourself a solid firewall system, if not this one, maybe some others :) To download the PC Tools Firewall, please click on this link to go to the download page: Get PC Tools Firewall