What is a VPN
نویسندگان
چکیده
The term “VPN,” or Virtual Private Network, has become almost as recklessly used in the networking industry as has "QoS" (Quality of Service) to describe a broad set of problems and "solutions," when the objectives themselves have not been properly articulated. This confusion has resulted in a situation where the popular trade press, industry pundits, and vendors and consumers of networking technologies alike, generally use the term “VPN” as an offhand reference for a set of different technologies. This paper attempts to provide a common sense definition of a VPN, and an overview of different approaches to building them. Table of
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In Part I we introduced a working definition of the term "Virtual Private Network" (VPN), and discussed the motivations behind the adoption of such networks. We outlined a framework for describing the various forms of VPNs, and then examined numerous network-layer VPN structures, in particular, that of controlled route leakage and tunnelling techniques. We begin Part II with examining other net...
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