CodeCharge StudioComputers that are publicly accessible via the Internet are exposed to various security risks such as hacking or virus infections on your computer. Due to these risks, it is recommended that you use a firewall, which filters unwanted requests that may come via the Internet.
The firewall can be setup to meet specific criteria and filter both incoming and outgoing traffic. Many firewalls also act as proxy servers and routers allowing you to use a single device for all your Internet connectivity needs. Due to the increase in security risks, firewall popularity has grown exponentially and Windows XP currently includes a simple built-in firewall.