I have installed a new router at my home, the new router has 4 ports. And the ISP only allowed for one port to have internet connection using ethernet. That port is taken by another person, and now only 3 ports left that don't have internet connection.
Is it possible to make my old router as a switch to share the internet connection with that one port that works?
I've tried to connect my old router to any of the 3 ports left, but I cannot access the internet.