Mark Merkow, an e-commerce and network security expert, writes a column for ecommerce.internet.com and is the coauthor of Building SET Applications for Secure Transactions.

Introduction. PART I: Unlocking the Mysteries of VPNs. Chapter 1: Embracing Virtual Private Networks. Chapter 2: Touring the Land of VPNs. Chapter 3: Putting Privacy into VPNs. Chapter 4: Public Keys, Private Messages. Chapter 5: Fighting for the QoS. PART II: Applying VPNs in the Real World. Chapter 6: Extraordinary Extranets. Chapter 7: Remotely Possible. Chapter 8: Branching Out All Over. Chapter 9: Justify Yourself. Chapter 10: Let Your Requirements Be Your Guide. PART III: Roadmap for VPN Solutions. Chapter 11: Designing Custom VPN Network Solutions. Chapter 12: Evaluating and Selecting VPN and PKI Solutions. Chapter 13: Implementing Your VPN and PKI. Chapter 14: Testing Your VPN. Chapter 15: Living in a VPN-Wired World. PART IV: The Part of Tens. Chapter 16: Ten VPN Online Information Sources. Chapter 17: More Than Ten VPN Standards. Chapter 18: More Than Ten Steps to an Information Privacy Checklist. Chapter 19: Ten Security and Security- Testing Specialists. PART V: Appendixes. Appendix A: VPN Buyer's Guide. Appendix B: Glossary. Appendix C: Inside IPSec. Index. Book Registration Information.

Includes tips on e-commerce and extranets