Two separate networks connected via a single link
Two separate networks connected via a single link
You can handle both networks using the PC, but you’ll need three network cards—one for the router/modem’s internet connection and one for each network. I suggest choosing the two routers option mentioned earlier rather than my approach, unless you’re ready to purchase a dedicated networking PC along with multiple cards.
It's a bit more involved than expected... buying a router means weighing price against capabilities. FPSense offers solid features, while affordable dedicated network devices exist, making the decision about the setup effort and benefits important.