I just moved into my current apartment lately. A technician came over and set up the internet for me. My apartment have four ethernet ports available but only one has internet feed. I took a look at the switch box. There is only one cable pluged into the switch and that's why only one port works. I'm wondering is it possible to connect an extra Ethernet switch to ONT and have four cables plug into the main switch on the other side? Since it has Internet feed from the working port without an router, I guess my plan might work, regardless of security or anything else?
Appreciate for your help.
Here's how the apartment looks like:
What in the switch box