VPN Overview
This chapter describes the background, encapsulation mechanism,
advantages, and application scenarios of virtual private networks
(VPNs) and how to select a VPN type.
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Introduction
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VPN technology builds a virtual private network without any change in the network topology. Compared with leased lines, VPN is a more cost-effective solution to build a private network.
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Application Scenarios for VPN
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This section describes VPN application scenarios and compares different VPN implementations for your reference.