NAT (Network Address Translation) is a networking technique that allows multiple devices to share a single public IP address. This is useful for home networks, where multiple devices such as computers, game consoles, and smartphones need to access the internet. NAT settings can be configured on your router to control how devices on your network communicate with the outside world.
The Xbox dashboard is the main interface for the Xbox video game console. It allows you to access games, apps, and settings. The new Xbox dashboard includes a number of new features, including the ability to check your NAT settings.