(Gateway, different from router [Explanation: Due to historical factors, many documents related to TCP/IP used to refer to the router used in the network layer as the gateway. Today, many local area networks choose routes to access the network, so today it usually refers to the gateway. That is the IP of the router! ] (English: Router), often used in homes or small business networks to connect local area networks and the Internet. Gateway also often refers to a device that converts one protocol to another, such as a voice gateway.)