A firewall protects you and your devices by examining each piece of information that flows between your devices and the Internet. They act as barriers to prevent unauthorized access to your personal information.įirewalls are software programs or hardware devices that filter the information coming through your Internet connection to your computer (and all the devices that are connected to that connection).
When you’re thinking in terms of your online security, modern-day hardware and software firewalls are similar. Most of us may have heard the term, and know it’s related to security in some way, but do you really know what a firewall is? Traditionally, firewalls were built to keep danger at bay-they were doors (or walls) to block fire from coming into another area-hence the name firewall.
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