The Jetico Personal Firewall allows the user to protect the computer from both inbound hackers' attacks and outbound access attempts performed by malicious software. Three-layers of protection: I. Low-level network packets filtering. The level checks network packet validity as well as various parameters of the network packet (like source and destination addresses, protocol, etc.) II. Application-level network events filtering. The level filters network connections on per application basis allowing to monitor, limit or block network activity of concrete Windows applications III. Filtering of user-level process activity. This kind of protection notifies user and cuts off dirty tricks performed by trojans and other malicious programs.....(free).....