A router with NAT (Network Address Translation) is a networking device that translates the IP addresses used on a private network to a single public IP address. This allows multiple devices on the private network to share a single internet connection and helps to protect the private network from external threats.
NAT is an important part of many home and office networks. It allows multiple devices to share a single internet connection without having to assign each device a unique public IP address. This can save money and make it easier to manage the network.