Introduction
1: Introduction to SSL VPN
2: SSL VPN: The Business Case
3: How SSL VPNs Work Free Chapter
4: SSL VPN Security
5: Planning for an SSL VPN
6: Educating the User
7: Legacy Data Access
8: The Future of SSL VPN Technology
Appendix A: A Review of TCP, IP and Ports
Appendix B: SSL VPN Gateways
Index

Free Chapters:
Chapter 3:
How SSL VPNs Work [PDF]
How SSL VPNs Work [HTML]

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Chapter 1: Introduction to SSL VPN
History provides us with a map of how technology effectuates changes in the way we live and work. This technological transformation started with simple tools that then expanded to the internal combustion engine and now to the technology of computers and networks. One important example of this is transportation. Through a system of physical networks—roads, trains, airplanes, and so on—people can now work and live outside the congestion of large cities. Large parts of the population moved to 'suburb communities', and started the famous daily commute. In spite of high petrol prices, people stayed in their suburbs. Today, with the advent of the Internet, people can work almost anywhere. One of the technologies that allow the ubiquitous access required is a technology known as SSL VPN. This chapter starts you on the knowledge roads that will educate you about this technology. Nevertheless, before we get into too much detail, let's first understand how this technology will help you.