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What is VPN?
It is a technology that overlays communications networks with a management and security layer. Through VPN technology, network managers can set up secure relationships while still enjoying the low cost of a public network such as the Internet.
Encryption and Authentication
Encryption is done by software or by routers to create a secure, virtual circuit or tunnel to the company's Virtual Private Network gateway.
Authentication address questions as: Is the data really from the stated source? Is the source a valid user for this corporate network?
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