I have a mobile broadband modem (Huawei E220, from Spanish carrier MoVistar) connected to a Ubuntu (Natty) laptop. Internet works well with regular settings.
I want to share that connection through a Wi-Fi modem (Comtrend AR-5381u) provided by the Spanish carrier Jazztel. I also have a standard Ethernet RJ45 cable.
The problem is: the router hasn't got any 'input' Ethernet but an telephone port and 4 'output' Ethernet ports.
How can I make the router to use the Ethernet connection to create the Wi-Fi network with internet instead of the telephone connection?
I've seen an option in the router settings called Bridging, but I don't know how to configure it.