I just want to share to you guys what I've experienced this past week. I've been using the final version of Sygate Personal Firewall for about 2 years now, and yesterday I had to part ways with the good ol' trusty firewall. My internet connection has stopped responding in the network for about a week. I called up my ISP. They did some fixes, and I did a lot of troubleshooting. My connection randomly connects and disconnects in the network. I had to reboot in order to get it working back again. I had a suspicion that it could have something to do with my firewall. Alas, I decided to download and install PC Tools Firewall to replace SPF. And guess what? My internet connection is up and running again. PC Tools Firewall has a built-in block for Denial of Service attacks (I dunno if CPF3 or OA Firewall also have it). I might go back to SPF and customize the ruleset for this type of attack. But so far, I'm quite pleased with my new firewall.