===== Gateway =====
[[ddsf:public:guidebook:06_append:glossary:start| Return to Glossary ]]

A **Gateway** normally works at the [[ddsf:public:guidebook:06_append:glossary:t:transportlayer|Transport]] and [[ddsf:public:guidebook:06_append:glossary:s:sessionlayer|Session Layers]] of the [[ddsf:public:guidebook:06_append:glossary:o:osi]]. At the Transport layer and above, there are numerous protocols and standards from different vendors; gateways are used to deal with them. Gateways provide translation between networking technologies such as Open System Interconnection (OSI) and [[ddsf:public:guidebook:06_append:glossary:t:tcp|Transmission Control Protocol]]/[[ddsf:public:guidebook:06_append:glossary:i:ip|Internet Protocol]] (TCP/IP). Because of this, gateways connect two or more autonomous networks, each with its own routing algorithms, protocols, [[ddsf:public:guidebook:06_append:glossary:n:nettopo|topology]], domain name service, and network administration procedures and policies.

Gateways perform all of the functions of [[ddsf:public:guidebook:06_append:glossary:r:router|routers]] and more. In fact, a router with added translation functionality is a gateway. The function that does the translation between different network technologies is called a protocol converter.

Source: [[https://blog.netwrix.com/2019/01/08/network-devices-explained/ ]]