Similar to other new hardware, the out-of-box experience of a router can leave your network with a lot of loose ends, despite it being able to function properly right away. These defaults are intentional: manufacturers ship these devices with settings that prioritize getting users online in just a few minutes, and they’re not necessarily the most secure or performant. Every time I set up a new router, I run through this list of settings before a single device touches the network, and it only takes a few minutes.