Anyone had experience with Comcast SMC modem/router?

[hewitt_tech]

I'm trying to get a Comcast connection working for a customer. They bought the "Workplace Enhanced Static IP" package. Comcast dropped an SMC modem/router at the customer site and I'm trying to get incoming connections to work. I set our internal router to the external IP address along with the Gateway address I was given and the DNS addresses. Unfortunately the SMC device is acting like a firewall. My server is not receiving packets on their remote desktop port (3389). When I toggle my router's "respond to ICMP requests" setting, pinging the external address works but that's all that I can seem to get working. Anyone had any experience with one of these beasts? I've been on hold with Comcast for the past 45 minutes after talking with a tech who turned off the SMC's NAT service and turned on it's ability to pass VPN traffic.

-Alex
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