My friend asked me to help him with some internet troubles he had. He has Comcast internet and he said they lost their connection a few days ago (why he didn't call Comcast first is beyond me). I ...

Here's the deal: until recently, I had a nice and easy LAN set up for my parents - a cable modem going to the WAN port of the WiFi router, and 3 computers behind the router, with IP addresses assigned ...