A firewall is software that allows you to control access from outside network resources, meaning other computers connected to the Internet.

There are many different firewall programs available to all Net users: dialup, cable modem, DSL, or satellite.

Why use a firewall?

There is data saved on your computer that can assist Internet criminals in emptying your bank accounts, destroying your credit rating, or assuming your identity.

Use of a firewall allows you to control access to your computer. It also gives you the final word on other software and on your system's ability to connect to the Net.