The Personal Firewall is a security agent that is installed on workstations, servers, and laptops in the network enterprise and on home and small business systems. Once installed, it provides a complex and customizable firewall. In addition, it can also provide intrusion detection and prevention, such as detecting and identifying known Trojans, port scans, and other common attacks, and to selectively enable or block the use of various networking services, ports, and components. Something that you may want to do immediately is to test your System's vulnerability, using Sygate's Web site to test it.
The Personal Firewall is designed to protect your computer from intrusion and misuse, whether malicious or unintentional.