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Best Home Firewall Apps to Keep the Hackers Out

Pick the best software firewall to block unwanted intrusions from the Internet to your Windows computer.

Apps in this Guide

A software firewall can block unwanted connections from the Internet to your Windows computer. With a home firewall in your arsenal, you can do everything from blocking all incoming connections tomore

A software firewall can block unwanted connections from the Internet to your Windows computer. With a home firewall in your arsenal, you can do everything from blocking all incoming connections to nonessential software to picking which services can access your system.

Windows 10 comes with a perfectly fine firewall, and many ISPs include a firewall with their Internet service that provides basic protection for your home network. But if you have a more specific need, a handful of security vendors offer firewalls either as standalone services or bundles with a security suite.

Frequently Asked Questions

What settings do I use?
While firewalls allow for endless tinkering, the default settings are almost always fine. If you have a specific game or application your firewall is blocking, you can whitelist it to grant it access to the Internet.
Do I need virus protection, too?
While a firewall can guard against intrusions, it's not a replacement for antivirus software, and you should consider running virus protection, whether you have a firewall or not. See our guide on Windows antivirus software for helping to pick one that is right for you.
How does a firewall work?
A firewall is a barrier that sits between your computer or home network and the Internet, filtering unwanted traffic or activities, such as someone trying to remotely access your computer. You can customize your firewall filters based on IP address, domain names, words and phrases, and ports.

Best Windows Firewall Software

Comodo Firewall

Comodo Firewall

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Comodo offers a free firewall that provides basic protection and a fuller featured security suite for $39.99 a year.

Windows 10 Firewall

Windows 10 Firewall

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Windows 10 comes with a fine firewall that is active by default. You can customize the firewall settings to give a program access to the Internet.

ZoneAlarm Free Firewall

ZoneAlarm Free Firewall

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A version of ZoneAlarm's firewall covers the basics. A $39.95 annual subscription adds malware protection.