Is anybody else having problems connecting a wireless router to a Comcast cable modem. I purchased my wife a laptop and we purchased a Linksys wireless and will not work. I know the laptop works because she can connect with other peoples wireless (Panera's for example) Is Comcast doing something that I don't know about. I can plug her laptop directly into the LAN from modem and it works. Just not with a router.
When you had comcast install the modem, what device was initially connected to the modem? I'm assuming it wasn't directly connected to the router.
I'm pretty sure your going to have to clone the PC's mac address to the LinkSys router. You can read more about this process in the users/owners manual. If you don't understand the process, PM me and I'll help you out.
That modem your assigned/purchased is provisioned on the ComCast network using a unique MAC address, so no pirates hit the network.