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What do you understand about tunneling protocol in Computer Networks? |
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Answer» A tunneling protocol is a communications protocol that allows data to be moved from one network to another. Through a TECHNIQUE known as encapsulation, private network communications can be SENT via a public network (such as the Internet). Because tunnelling entails repackaging traffic data into a different format, possibly with encryption as a standard, the nature of communication that passes via a tunnel can be hidden. The data component of a packet (the payload) is used by the tunnelling protocol to carry the packets that actually provide the service. Tunneling FOLLOWS a layered protocol model, such as the OSI or TCP/IP protocol suites, but frequently BREAKS the layering by using the payload to convey a service that the network does not normally provide. In the layered approach, the delivery protocol is usually equal to or higher than the payload protocol. |
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