Understanding Virtual Private NetworksThe introduction of the virtual private network (VPN) is addressing the issues of security and high costs by enabling the use of the public networks without compromising the security of the data transferred across them. Since the potential cost savings of using VPN technology are large, especially when compared to the alternatives, commercial organisations are investing heavily on the acquisition and installation of VPN equipment. The term VPN is, however, widely used to describe a variety of scenarios. This article will outline some of the protocols most widely used to develop these networks.
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