Hi BlookerG, NAT type is a general measurement for how well you can connect to other systems (consoles, computers, servers, etc) through your internet connection. You will want to ensure you have the best, most stable connection possible to have a great Destiny experience. There are a few ways to do that and I would recommend taking a look at our NAT guide here: http://www.bungie.net/en/Help/Article/11931 You can find on that page our recommended suggestions. I hope that will improve your NAT type!