Its purpose is to verify information received from the Internet or a local network and to block or allow access to a computer. Why do you need a firewall?Ī firewall is a software or hardware that prevents hackers and certain types of malware from gaining remote access to a computer over the world wide web. However, before you get your hands on top-notch free firewall programs, it would be best to cover the basics first. Although that is not the case.īut do not worry, you need no extra cash for an additional firewall software there are some best free firewalls you can install. Many people think the built-in firewall that their Windows, Android, iOS, and other operating systems have is enough. Here are tested top free firewall programs that you can use. The built-in firewalls that your Windows, Android, Mac, and other OS have are not enough.
