This is not correct, a Private IP address is an Internal/Local IP address, however 65.x.x.x is an External IP address.
Your combo modem/router should be assigning an Internal/Local IP address between 192.168.0.2 to 192.168.0.254 to your Tablo. If this is not the case, something is wrong with the DHCP Server on the combo modem/router.
I see you entered 192.168.0.1 as the Local IP address of the Tablo. This also shouldn’t be the case. 192.168.0.1 is likely the IP Address of the combo modem/router itself, which is what you use to access the configuration GUI / webpage.
When you setup port forwarding you don’t have to enter the External IP address cause that will likely change unless you pay your ISP for a Static IP address. Just leave this part blank.
I have attached the link for the manual for your Netgear Zoom modem / router. I have confirmed that 192.168.0.1 is the IP Address of the modem / router. Go to Page 70 of the PDF, then use that to go to WAN Settings. The IP Address listed under the WAN Settings is your External IP Address.
Then go to My Network to find the Internal / Local IP Address of your Tablo.
Also, can you hard wire the Tablo directly to your combo modem / router instead of connecting it via WiFi?
http://www.zoomtel.com/documentation/cable/5363-UserManual-Eng.pdf