![]() If you are running Windows 7 or Windows Vista, then the built-in firewall is turned on by default. To check your Firewall settings in Windows 10, go to the Start menu, click Control Panel, and click Systems and Security ![]() If you choose instead to use a third-party firewall, such as Norton Personal Firewall or ZoneAlarm, you may find it more restrictive and/or intrusive.We recommend the built-in Windows firewall for all Windows systems, and the OS X firewall for OS X Macs.For good protection, you should run a firewall AS WELL AS anti-virus software and spyware detection software.A firewall helps protect your computer from unwanted outside connections.Once a port is opened, a stranger may be able to take control of your computer, or your computer may be used to spread viruses and other malware. ![]() You might open a port on purpose, but a port can also be opened by a virus or worm, without your knowledge. Why do I need a firewall?Ī firewall helps you block unwanted connections to open network ports on your computer. Everyone on the Internet should use a firewall in addition to anti-virus and spyware removal software. A firewall helps protect you against unwanted outside connections to your computer.
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