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| enterprise private network ： ウィキペディア英語版 |
enterprise private network
An enterprise private network is a computer network built by a business to interconnect its various company sites (such as production sites, offices and shops) in order to share computer resources.
==History==
Beginning with the digitalisation of telecommunication networks, started in the 1970s in the USA by AT&T,〔"(History of network switching )". AT&T.〕 and propelled by the growth in computer systems availability and demands, enterprise networks have been built for decades without the need to append the term ''private'' to them. The networks were operated over telecommunication networks and, as for voice communications, a certain amount of security and secrecy was expected and delivered.
But with the Internet in the 1990s came a new type of network, virtual private networks, built over this public infrastructure, using encryption to protect the data traffic from eaves-dropping. So the enterprise networks are now commonly referred to ''enterprise private networks'' in order to clarify that these are private networks, in contrast to public networks.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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