OpenVPN 2 Cookbook (repost)

It is capable of establishing direct links between computers across networks and firewalls. It is powerful software, but getting the most from it can be a daunting task.
OpenVPN 2 Cookbook provides solutions to common OpenVPN problems. The book covers everything a system administrator needs to manage and run an OpenVPN network, from point to point networks to troubleshooting.
OpenVPN 2 Cookbook offers all the information you need to successfully manage your network. Covering all the common networks, including point to point networks, multi-client tun style networks and multi client tap style networks, this practical guide gives quick answers to common questions and problems.
Each technical aspect is broken down into short recipes that demonstrate solutions with working code, then explain why and how that works. The book is intended to be a desk reference for users with a whole range of experience levels.

What you will learn from this book
Setting up point-to-point, routed as well as bridged VPNs
Determining the best type of OpenVPN set up for your networking needs
Configuring OpenVPN on Linux, Windows and Mac OS X
Using scripting and plugins to optimize your VPN setup
Troubleshooting your VPN setup
Using advanced OpenVPN techniques, such as proxy support, compression, different encryption algorithms
Setting up a public key infrastructure (PKI) for use with OpenVPN, including X509 certificates, certificate revocation lists and intermediary certificate authorities
Integrating a hardware security token or smart card into your VPN setup