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You are here: Home » What is the Gateway ?

By Abhishek Ghosh March 17, 2013 10:56 pm Updated on March 17, 2013

What is the Gateway ?

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Gateway connects computer networks which can be based on completely different network protocols can be based. As an example, the way to connect an e-mail to SMS gateway. The protocols for e-mail and SMS are incompatible with each other but with e-mail to SMS gateway the data from one type of network to another are transmitted. Another example would be e-mail to fax. But what is this Gateway ?

 

What is the Gateway : Basics

 

A gateway is ‘positioned in front’ of a protocol where conversion is needed. The gateway is what that is needed to convert the data, including the omission of information. In detail all the log information, which is appended to a data packet is removed, and information added by others (for example from the Internet protocol) are also removed.

 

The default gateway : Router

 

In the early days of network communication, it was often necessary often to connect networks of different types with each other and inevitably to convert their protocols, because IP was confronted with protocols such as DECnet, SNA and IPX / SPX.

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With the dominance of the IP protocol which drew router increasingly towards it to take the place of the gateway. Meanwhile, there are gateways, where protocol conversion is no longer necessary. Instead of converting protocols, managing the default gateway of an IP configuration which do not belong to a subnet network, requests to a different subnet; thus fulfilling simply the functions of a router, which is why the name “default router” would nowadays more appropriate. Gateways are therefore in common often equated with routers, gateways are not routers though. Routers work on the third layer of the OSI reference model, a gateway can be implemented on the other hand, the layer four to seven.

 

Internet gateway

 

What is the Gateway

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Image : Gateway by Juniper

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These devices combine the function of connecting networks together (routing), with the ability to use different protocols for this purpose. Thus, IP packets from the home network for DSL use mostly PPPoE protocol in the network of the provider.
 
 
<h3>Cloud Storage Gateway</h3>
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Discussed separately on the topic named <a title="Cloud Storage Gateway" href="https://thecustomizewindows.com/2012/10/cloud-storage-gateway/" target="_blank">Cloud Storage Gateway</a>.
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Abhishek Ghosh

About Abhishek Ghosh

Abhishek Ghosh is a Businessman, Surgeon, Author and Blogger. You can keep touch with him on Twitter - @AbhishekCTRL.

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About This Article

Cite this article as: Abhishek Ghosh, "What is the Gateway ?," in The Customize Windows, March 17, 2013, February 1, 2023, https://thecustomizewindows.com/2013/03/what-is-the-gateway/.

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