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The foundation of SYN flooding attack is the design of three-way handshake when TCP is used to establish connection. The third packet verifies that the connection initiator has the ability to accept the packet at the source IP address used in the first request, that is, its return is reachable. Figure 1 shows the process of exchanging packets at the beginning of a normal TCP connection.In addition to the information kept at home, I borrowed a lot of relevant books, Anyway, as long as it's about dogs, I basically read it, When I was playing my life on the Laoshan front line, The family also wrote to me all the way, Said let me pay attention to, live well, now catch up with the good situation of reform and opening up, to set up a concentrated dog raising, dog training, dog racing in the vicinity of Beijing, from pure blood pet dogs, to specially trained racing dogs, bulldogs, what you want, this is just like horse racing, do a good job that make a lot of money is a small thing... "　　《公元1921》，讲述的是中国共产党成立的过程。　怪咖们联手策划校园音乐剧，准备度过疯狂的一学年，但严厉的新校长却禁止音乐剧的上演，现在得靠朱莉娅流转局面《秘密》围绕着老戚为友寻子的坎坷经历、诗琪家族复杂离奇的恩义情仇，及和平、四海的正邪因果与老鬼、凤茹的自我救赎，透过广为流传的神秘骗局，追寻赤裸残酷、匪夷所思的事实真相，揭示人性社会的善恶美丑。两大主线及多条副线的巧妙分配并合理侧重，构成丰富完整而又错综庞杂的社会现实，各自不同的人文环境与人物命运，在彼此独立中相互关联依存，随一个个或扑朔迷离、或攸关生死的真相逐一大白，秘密最终得以揭晓，却又带着主人公离奇身世的诸多未知。巡警孟光明误打误撞，救下了女窃贼欧阳青，却被诬陷成为杀人疑犯。为了洗清冤屈，他接受探长李明进的密令，与欧阳青寻找黑帮犯罪证据。然而，至暗城市中危机四伏，陷阱重重，他们二人最终能否战胜黑暗，奔向光明？好容易来了，大夫影儿还没见着，儿子先被挡住了。