这是关于网络安全的一个ppt讲义，可以给大家学习参考，，希望能够喜欢！-This is a network security ppt lectures, we can learn to reference, in the hope of love!

里面是公司内部培训用的PPT资料。上传这文件只得分，和将文件共享给爱学习的人。-Which is used for internal training, PPT data. Upload this file only score, and the file sharing to the love of learning.

一东 云对雨，雪对风，晚照对晴空。来鸿对去燕，宿鸟对鸣虫。三尺剑，六钧弓，岭北对江东。人间清暑殿，天上广寒宫。两岸晓烟杨柳绿，一园春雨杏花红。两鬓风霜，途次早行之客；一蓑烟雨，溪边晚钓之翁。(Look at the stars, Look how they shine for you, And everything you do, Yeah, they were all Yellow. I came along, I wrote a song for you, And all th