Built a firewall box and installed pfSense for a relative. I love pfSense. It’s complicated, and you shouldn’t dive in way over your skill level because that can end badly as with all things security, but this software beats every consumer router by a long shot. Consumer routers are products that are being sold, and the manufacturer wants to sell new items so the support for older models is limited – no updates after only a short while and the router becomes a liability. With pfSense you just update the software, for free, and you’re up to date.