What is a gateway device?

A gateway is a network interconnection device. A gateway, also known as an Internet connector or a protocol converter, is a computer system or device that performs the task of conversion; the gateway implements network interconnection above the network layer and is a complex network interconnection device that is only used for two high-level protocols with different network interconnection. The gateway can be used for both WAN interconnection and LAN interconnection; it is equivalent to a translator when used between two systems with different communication protocols, data formats or languages, or even completely different architectures.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

A gateway is a network interconnection device.

Gateway introduction

Gateway is also called an Internet connector and a protocol converter. It is a device that plays the important role of conversion. computer system or equipment. Network interconnection is usually implemented above the network layer. It is a complex network interconnection device and is only used for network interconnection between two high-level protocols with different protocols.

Everyone knows that when walking from one room to another, you must pass through a door. Similarly, sending information from one network to another must pass through a "gateway", which is the gateway. As the name suggests, a gateway is a "gateway" that connects one network to another. That is the network level.

In OSI, there are two types of gateways: one is a connection-oriented gateway, and the other is a connectionless gateway. When there is a certain distance between two subnets, a gateway is often divided into two halves and connected with a link in the middle. We call it a half gateway.

The role of gateway

It can be used for both WAN interconnection and LAN interconnection. Used between two systems with different communication protocols, data formats or languages, or even completely different architectures, it is equivalent to a translator. It is different from the bridge that simply conveys information. The gateway must repackage the received information to adapt to the needs of the destination system.

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