Outpost Pro Firewall has a flaw that allows malicious people to cause a Denial of Service. The issue has been reported in Agnitum Outpost Pro Firewall version 2.1. Prior versions may also be affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/33332/outpost.txt
Source: https://packetstormsecurity.com/files/33332/outpost.txt.html