A practical guide for comparing, designing, and using IPsec, MPLS Layer 3, L2TPv3, L2TPv2, AToM, and SSL virtual private network Explore the major VPN technologies and their applications, design, and configuration of the Cisco IOS Router, Cisco ASA 5500 Series, and Cisco VPN 3000 Series Concentrator platforms Compare the various VPN protocols and technologies, learn their advantages and disadvantages, and understand their real-world applications and methods integration Find out how to design and implement Secure Socket Layer (SSL) VPNs, including consideration of clientless operation, the Cisco SSL VPN Client, Cisco Secure Desktop, file and web server access, e-mail proxy, and port forwarding Learn how to deploy a scalable remote access and secure IPsec and L2TP VPN designs, including consideration of authentication, encryption, split-tunneling, high availability, load-balancing, and scalable IPsec NAT transparency Teachers site design-to-site VPN and implementation including configuration of security protocols and policies, multiprotocol / multicast traffic transport, NAT / PAT traversal, quality of service (QoS), Dynamic Multipoint VPN (DMVPNs), and public key infrastructure (PKI) virtual private network (VPN) allows organizations to connect offices or other sites via the Internet or network service providers and allow mobile or home users to enjoy the same productivity with those in the same physical location as the central network. Through the operation, application, and configuration details offered in each chapter, you? Will learn how to compare and contrast the various types of VPN technologies, allows you to consider all relevant VPN deployment options and choose the most suitable VPN technology for your network. Comparing, Designing, and Deploying VPNs begins with an introduction to types of VPNs available. Appendix A offers insight into two multipoint emulated LAN services that can be used over the MAN or WAN: Virtual Private LAN Service (VPLS) and IP-only Private LAN Service (IPLS). If you are a network architect, network engineer, network administrator, IT manager, or CIO involved in selecting, designing, disseminating, and VPN support, you? 'll Find Comparing, Designing, and Deploying VPNs become indispensable reference. This book is part of the Cisco Press Networking Technology Series, which offers networking professionals valuable information to build efficient networks, understanding new technologies, and build a successful career.