I'd make sure things are plugged into the right ports. 1&2 are the standard stuff. 3 is for the FHC (if you have one), 4 is for FM-type stuff. Ports 1-3 have DHCP. I don't think Port 4 does. IIRC, port 4 is the one closest to the modem port, not the farthest.
I would make sure you're not running a custom DNS, since the firewall will (or is supposed to) filter out any calls to any but authorized DNS as part of it's filtering system.
Barring the obvious, I'd call support and let the wizards see what they can find.
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