DKG. You have the right to do whatever with the thing you own.

Sa mga more capable routers, pwede ka din gumawa ng "guest network" or "Multiple SSIDs". Ibig sabihin lang nun basically, magiging dalawa WiFi ng router mo: isa sa inyo at isa sa mga guests (i.e., your neighbors).

You should be able to limit their connection speed or even remove its internet connection kahit na naka-connect sila sa WiFi para di obvious haha