July 3, 2009 8:10 PM
No, you can do one of three things:
1.) Put the cable modem in "bridge mode" - your ISP should be able to help with that. Then you set up your router as normal.
2.) Use the cable modem as the router. For wireless access you simply connect one of the LAN ports of the wireless router into a LAN port on the cable modem. You then also need to turn DHCP to OFF on your wireless router. Your wireless router now just becomes a wireless access point (you don't use the router's WAN port in this case). You then configure everything in your ISP's cable modem/router.
3.) Set your wireless router up with a FIXED IP address of 192.168.1.254 on your WAN port. Then go into the config screen of your cable modem router and set the DMZ address to be 192.168.1.254. This way, all traffic will be passed to your wireless router w/o any firewalls.
So one of these three methods should do what you need.
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