Connecting to the Internet without a firewall is like leaving the door to your house wide open and putting a sign on the front lawn that reads “Rob me.”
Hackers will stop at nothing to access your online information. From viruses to worms, e-mail hoaxes, and scams, there are literally thousands of ways for people to get access to your valuable information.
A firewall can help protect your computer against these and other security attacks.
There are numerous firewall applications that can be obtained simply by searching for and downloading them from the Internet. Other options for protection include software firewalls (a good choice for single computers), hardware routers (great for home networks that will be connected to the Internet), and wireless routers for those planning a wireless network.