I am only using the Netgear Router for WiFi although both routers broadcast an SSID.
I have the Port Forwarding set up on the Netgear router to forward to the IP address of the NCS computer.
I have also set up the Direct TV firewall to allow port 8100.
I am not sure what you mean when you say "Default routing back through WAN is usually disabled." Is this something that i need to change on my Netgear Router?