OpenSWan是Linux下IPsec的最佳实现方式，其功能强大，最大程度地保证了数据传输中的安全性、完整性问题。,IPsec is OpenSWan under Linux the best way to achieve, and its powerful, to ensure maximum data transmission security, the integrity of the problem.

IPsec服务器，可以自动生成证书密钥等-IPsec server certificates can be automatically generated keys, etc.

Learn from the developers of Openswan how to build industry-standard, military-grade VPNs and connect them with Windows, Mac OS X, and other VPN vendors

pluto实现分析(1) 本文主要是解析openswan-2.4.7中的pluto的实现过程，代码基本都是在programs/pluto目录下。-openswan-2.4.7 pluto