Router not giving internet

[Origin Saint]

Hi, guys. I'm currently at a friends house and I brought my wireless Linksys WRT54G2. I have the router connected to his Motorola SBV5121 Cable Modem. When I have it connected to the modem, and something else connected to the router through another ethernet cable, that thing won't receive internet connection. I can plug the computer directly into the modem and get internet but when I use the router as a HUB for ethernet cables, the things I connect to it don't get any internet connection. The router is set on DHCP Automatic internet connection. Please help, it's much appreciated.

 

[johnb35]

What cable provider does he have? Are you connecting a cable from the modem to the single internet port and not one of the 4 own ports? Do you use this router at home? If so, then you most likely have to reset it so it can register a new internet connection and get the correct settings.