What is a Personal Firewall?
A personal firewall protects users from internet threats by implementing security policies that restrict network communications in and out of a computer. A personal firewall is extremely important for computers with a static IP address or one with a stable IP address, such as with cable modems or DSL.
For example, a Personal firewall is important when,
You surf the internet at home using an 'always on' broadband connection
You connect to the internet via a public WiFi network in a park, cafe or airport
You run a home network which needs to be kept isolated from the internet
You wish to be kept informed when any program on your computer attempts to connect to the internet
Most Personal Firewalls are highly configurable so you can easily create security policies to suit your individual needs.