Performance Analysis and Special Issues of VPN Technologies in Communication: Trusted VPNs, Secure VPNs and Hybrid VPNs

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Provided by: International Publisher for Advanced Scientific Journals (IPASJ)
Topic: Security
Format: PDF
A Virtual Private Network (VPN) is a private data network that makes use of the public telecommunication infrastructure, maintaining privacy through the use of a tunneling protocol and security procedures. A virtual private network can be contrasted with a system of owned or leased lines that can only be used by one company. The main purpose of a VPN is to give the company the same capabilities as private leased lines at much lower cost by using the shared public infrastructure. Phone companies have provided private shared resources for voice messages for over a decade.
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