The network infrastructure in my parents' house is rather inconvenient. The modem is in the basement and the wireless router is in the attic. The only device connected via cable is my HTPC in the living room. I'd like to get a NAS for the HTPC, but unfortunately there is really no room anymore in the living room, so I'd like to put in in the basement, next to the modem.
The modem is running in single-user-mode, so the router is dialing in. There's a LAN cable connected to the modem and the internet/modem port of the router.
Would it actually be possible to connect additional devices to the network using this cable (with a hub or switch), or would I have to use another LAN port of the router*?
* Either putting the NAS next to the router in the attic, or installing another cable.