Copyright by J. Michael Stewart

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Chapter 12. VPN Technologies

VIRTUAL PRIVATE NETWORK (VPN) is a general industry term that actually covers a many different technologies. Ask anyone who works in a large company and needs to access a corporate network remotely and he or she will probably confirm using a VPN to connect to the network and get to his or her e-mail, intranet, and other corporate applications. Ask him or her how that VPN works, however, and you will almost always get a blank stare. End users are typically interested only in the result of a solution, not in how it works. For you the information security practitioner, however, just how a VPN works is as important as what benefits aVPN provides your organization.

VPNs deploy in a number of different ways, leveraging a ...

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