My ISP supplied me with an Arris TM822G/CT modem and a NetgearWNR1000v2 router.
I can plug my computer directly into the modem and I get internet connection.
I can plug the modem and my computer into two different LAN ports and get internet connection.
When I plug in the modem to WAN, where it should go, and my computer into LAN, I get no internet connection.
Plugging my computer into the router via LAN with nothing else connected to the router does not allow me to change the router settings.