VPN Architecture
Stan Kurkovsky, Central Connecticut State University
VPN Functionality and Technologies
Site-to-Site Intranet VPN Gateway Functionality
Remote Access VPN Gateway Functionality
Additional Functionality of VPN Gateways
Additional Functionality of VPN Clients
VPN Clients for Specific Operating Systems
INTRODUCTION
Motivation for Virtual Private Network (VPNs)
Ever since people started communicating effectively with one another, the issue of privacy has been a cornerstone. How do we protect our communication from being accessed by those who do not need to know about it? The Internet environment, in which most modern communication takes place, adds its own specifics to the nature of communication: it is conducted in a public medium. Virtual private networks (VPNs) provide the means for conducting private communications in the public Internet (Cohen & Kaempfer, 2000; Herscovitz, 1999; Tuomenoksa, 2002). A VPN merges the concept of a virtual network that exists on top of the Internet with the concept of a private network that provides confidentiality.
In the modern world dominated by business communication, VPNs provide an irreplaceable tool that enables businesses to communicate ...
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