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A VPN (virtual private network) is a way to use a public telecommunication
infrastructure, such as the Internet, to provide remote offices
or individual users with secure access to their organization's network.
A virtual private network can be contrasted with an expensive system
of owned or leased lines that can only be used by one organization.
The goal of a VPN is to provide the organization with the same capabilities,
but at a much lower cost.
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