Enable your firewall and antivirus. If you’ve used Windows for a while now, you’re familiar with the Windows Defender Security Center. … One other layer of security is already built into Windows 10, and you should take advantage of it by enabling firewall and antivirus protection.

Do I need a firewall on my PC?

Yes, you do need a firewall. … If your computer connects to the internet using a router, you already have a firewall built in to your security, because the router acts as a hardware firewall. In my opinion, that’s all that most people need.

Should I have Windows Firewall on?

It’s important to have Microsoft Defender Firewall on, even if you already have another firewall on. It helps protect you from unauthorized access. To turn Microsoft Defender Firewall on or off: Select the Start button > Settings > Update & Security > Windows Security and then Firewall & network protection.