Is this possible? See I own a gym and I'm trying to network my apartment. The DSL modem with 4 port switch is down at the front desk, while my apartment is on the far other side of the gym, a level up ...

There are a lot of ports on the back of your router that all fit Ethernet connectors, but does it matter which port you use ...

Yes, even if it's a Cat5e cable.

We are trying to configure a remote router by hooking it up to the production router (to establish a connection to it). The connection will work like this: production router ---aux port to ---console ...