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SYN flooding attacks can attack with fewer packets than ordinary brute-force DoS attacks that only send a large number of packets to the target network. However, this requires some understanding of the server's operating system, such as how much backlog queue space it allocates and how long it will keep the TCB in the SYN-RECIEVED state before timeout and discarding the TCB. For example, an attacker can send a certain number of SYN packets that are exactly the size of the backlog queue, and their cycles are just the time when the TCB is recycled, thus making the server permanently unavailable.二十世纪初叶，一场洪水，滔天而至，文阿陆与母亲在大水中天人永隔，徒留伤悲。三年后，某夜，广州府。月黑风高，“华清”浴室发生枪战，“聚源社”“义水轩”帮主双双死于乱枪之中。小裁缝文阿陆无意中撞见这一幕，平白无故惹上杀身祸，被赶来营救社主却误杀了社主的聚源社三当家于义龙，当场要灭口文阿陆仓惶奔逃，走投无路。心学组织内部能人辈出，而且在半神的影响下几乎都是正义的能人，在共同的信仰中彼此推荐提拔，愈发形成了一股潜在且强大的正义力量，但依然只能潜在，因为聊了这么多，严嵩这座高山依然无法逾越。　一尊价值连城的佛头丢失，引得这世间的人们为之伤神，为之奔波，他们的种种行为既令人同情又令人啼笑皆非，那种人世间的亲情、友情、恋情；贪心、揣度他人之心，都表现得入木三分，启迪人们为之三思……2 testers