An introduction to designing and configuring Cisco IPsec VPNs Understanding the basics of the IPsec protocol and learn implementation best practices Study up-to-date IPsec design, including Cisco's latest innovation in security and VPN marketplace Learn how to avoid common pitfalls associated with the spread of Strengthening IPsec theory with case studies, configuration examples showing how IPsec maps to real-world solutions IPsec Virtual Private Network Fundamentals provides basic working knowledge of IPsec on various Cisco routing and switching platforms. This provides the foundation needed to understand the various components of Cisco IPsec implementation and how it can be successfully implemented in various network topologies and markets (service provider, enterprise, financial, government). This book is written using a layered approach, starting with basic explanations of why IPsec was developed and the types of organizations relying on IPsec to secure data transmission. This book covers the design and implementation of IPsec VPN architectures using an array of Cisco products, starting with basic concepts and move on to more advanced topics including high availability solutions and public key infrastructure (PKI).