![]() With over a decade of writing experience in the field of technology, Chris has written for a variety of publications including The New York Times, Reader's Digest, IDG's PCWorld, Digital Trends, and MakeUseOf. Chris has personally written over 2,000 articles that have been read more than one billion times-and that's just here at How-To Geek. That's why a firewall was so necessary on Windows all those years ago - because Windows XP had so many services listening for network connections, and those services were being exploited by worms.Ĭhris Hoffman is the former Editor-in-Chief of How-To Geek. If you want a firewall that will allow you to choose which programs get to connect to the Internet or not, look elsewhere.Īn incoming connection is only a problem if there are applications listening for these incoming connections. ![]() Some firewalls also allow you to block outgoing connections, but the built-in firewalls on Mac and Windows don't work in this way. It's more than just a switch you flip to boost your security, as it's sometimes understood by Windows users.įirewalls like this one do one thing: They block incoming connections. Understanding why the firewall isn't enabled by default and whether you should enable it first requires understanding what a firewall actually does. Related: What Does a Firewall Actually Do? Like firewalls on other operating systems, it allows you to block certain incoming connections. Macs to include a firewall, which you can enable from Security & Privacy in System Settings.
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