+ 0 Votes Nothing to do with the MAC addresses? 1bn0 6 years ago Have you tried spoofing the mac address of one of the computers in the router?Can't rule it out if you haven't tried it. Don't know if you have unless you tell us.This has been required for EVERY ROUTER I HAVE EVER CONFIGURED on a cable modem connection. + 0 Votes Can you clarify some points? Neon Samurai 6 years ago You should be able to hook the Motorola to the coax in the wall. The Linksys WAN port then hooks into the Motorola's client side network port. Your wireless connects by radio frequency whild your wired nodes connect to the Linksys internal network ports. This is basically my exact setup with more client nodes.My cable modem does not offer any dhcp or try to be a bridge like Bell's issued ISDN modem. I'm not shure how yours is.My wrt350n gets an external IP issued by Rogers network. If the network has grief with my MAC changing, rebooting the modem then booting the router fixes it.I then set the wrt350n to provide DHCP service to the internal network. Wired nodes get there IPs with the next reboot.I then set the wireless to "G only" but pick "n" if you use that instead. Encryption is set to WPA2 with a AES. Wireless nodes connect and get issued valid IP.That is the minimum; wired need the cable connected, wireless need 11G, WPA and a strong key (minimum).I mention the Bell ISDN modem. This little unit is an ISDN modem that includes a DHCP server and wireless. That particular connection uses it's own router to manage the network and get the internet feed so all I wanted from the ISDN modem was bridging between Bell's digital line and the network cable.To get basic functionality out of that misserable ISDN modem, I had to perform some cryptic configurations after diging down about three levels of config forms. There was an archaine setting told the modem to function in "pass through" mode instead of trying to manage the network.Is your cable modem similar to this where it includes the cable modem and a switching hub with dhcp? If so, confirm if there is a way to set a "pass through" mode on it.I can't think of anything else that would stop you off the top of my head.Some questions- Who is your ISP and are they using your MAC as part of the validation for your connection? Documentation should indicate "recognized MAC" or something which you would then input as the router's faked MAC.- Where does the connection die? Are you able to connect too and among the nodes on the router but not too the outside network? (is the router getting issued an external IP) Are only your wired nodes getting internet but not your wireless? Can you tell which stage breaks the network connectivity?