having trouble with comcast and broadband router

[puck]

Ok I have 3 boxes running win2k pro, and I had the cable modem connected directly to one computer. I then shared the internet connection with another nic to the second computer and everything worked great. Except I couldn't access the internet with the third computer.
Now I have a D-Link DI-714 broadband router in the mix and I can't see the internet. The local connection to all three computers works fine though. Is there some special setting required for Comcast.net? I never had to provide any authentication before with the two computer setup, not even the computer name mattered.
I've read some articles regarding comcast and nat routers and how they were supposedly not allowing them. I've also heard that they really don't care, they just aren't providing any support. I would really like to hear from anyone using a router with comcast.net service.

 

[Rhi]

They just don't officially support networks. You should have no problem using a router. Is the router leasing an IP from the WAN port? Check the "status" page. Also be sure you turned off ICS.

-Rhi

 

[Daniel]

After his suggestion make sure you still aren't pointing to that first pc as the gateway.

 

[cipher00]

Yup, I've got a LAN setup with Comcast.net (check out the rig). No problems at all - make sure that the router is doing the work (DHCP enabled, that kind of thing). Also, be sure that Outlook (Express) is looking for mail.comcast.net for your e-mail. You may want to check to see that your router has the MAC of the first NIC cloned.

Good Luck.