YOU’LL NEED THIS
YOU MIGHT NOT THINK you need another firewall. The one built into Windows is working all the time in the background to protect individual computers, and many routers have their own firewalls to protect the whole network. But running your own custom firewall has several benefits: it gives you more flexibility, plus better oversight of what’s going on in the background.
It’s also easier to set up than you might think. You don’t need specialist hardware, and you don’t need to pay for firewall software. The open-source pfSense firewall is free for personal use, with a graphical interface for administration and all the same features as the enterprise version (the difference is that you don’t get commercial support). You can run it in
