This book is a comprehensive guide to using Openswan for building both basic and industry size, military strength VPNs for medium to very large organizations. Written by the core developers, this practical book is all you need to use Openswan to build any VPN infrastructure you may need. The authors have covered the latest developments and upcoming issues. This book will not only help you build the VPN you need, but also save you a lot of time. Network administrators and any one who is interested in building secure VPNs using Openswan. It presumes basic knowledge of Linux, but no knowledge of VPNs is required.