IPSec IKE-ISAKMP-DH AH-ESP MD5-SHA1 DES-3DES-AES-RSA
http://www.manew.com/blog-166065-16404.htmlhttp://blog.csdn.net/bytxl/article/details/16825251http://www.h3c.com.cn/service/channel_service/operational_service/icg_technology/201005/675214_30005_0.htm