A Guide to Virtual Private Networks Book

What makes Internet Protocol Security Architecture (IPSec) virtual private networks (VPNs) secure? A Guide to Virtual Private Networks does a great job of explaining the processes that--in theory, anyway--do. The book covers the data-handling and security aspects of these VPNs with an eye toward implementing one. You'll find a comprehensive portrait of the technologies that define VPNs governed by the IPSec specification. This book clearly explains how the Internet Security Association and Key Management Protocol (ISAKMP) and the Oakley key-exchange protocol work. It also provides details on how Internet Key Exchange (IKE) works under ISAKMP/Oakley. The workings of all these protocols are explained by dissecting transactions into their individual phases, enabling you to follow what happens and design your VPN to be as efficient and secure as possible. Three VPN implementation scenarios are presented, including individual users accessing a VPN via dial-up connections to the Internet, geographically separate organizational LANs linked to each other across the public network, and an extranet that includes semitrusted customers or suppliers. Each of these scenarios includes information on router and firewall configuration. --David WallRead More