Why router vs firewall doesn’t matter on a home network. Most routers have a built-in firewall that offers basic protection for homes and very small offices.

Configure Router Firewall. This is simply turning the firewall on/off. If you’ve installed Windows, chances are the operating system has already set up your router during installation.

How to build your own router and firewall with Opnsense. More security, more features, and easier to expand your 'home lab' -- not to mention how much you can learn about networking.