杜飞的Exchange http://dufei.blog.51cto.com/382644/1151561/
Cisco的防火墙 http://blog.sina.com.cn/s/blog_ae9dee8301014qke.html
ASA命令大全 http://kuangkuang.blog.51cto.com/838/278598/
AWK大全 http://www.cnblogs.com/ggjucheng/archive/2013/01/13/2858470.html
TCP 分析 http://blog.csdn.net/wang7dao/article/details/16805337
LVS+keepalive详解 http://atong.blog.51cto.com/2393905/1351709
SHELL http://wolfchen.blog.51cto.com/2211749/1122841
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