Opening Ports 1701/LT2P on a Netgear WNR1000v2

This has been the most frustrating thing I have ever experienced. Directv tells me I have top open ports 1701/LT2P to get my receiver to work. I have been working on this for months. Directv tells me to call Comcast. Comcast tells me to call Netgear. Netgear tells me to call Comcast. I have tried every idea I can from google searches and spent months trying every router setting I can, but no luck. Is there anyone in this forum that would be kind enough to pull me out of the fire.