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确实，南京城好好的，可不能让狼兵进来。Weng Siliang informed the buyer that he had called in more than a dozen Indonesian sailors to take over the "Changsheng Wheel", while the 18 gangsters returned to the mainland of China on the receiving ship.陈平的回答让范增怒不可遏，冷冷看着陈平、项庄、龙且站在面前，却又不好怪罪。小学校长陈绍常妻子早逝，辛苦地将三个孩子拉扯大。朋友刘之权逝世，其女刘敏华不堪后母虐待找绍常谋事，绍常将她留在学校做了一名教员。长子建中在银行工作，与经理的女儿结了婚，为了自己的名声他劝父亲从小学校辞职。绍常无奈提出辞呈，推荐敏华为校长。因过不惯无所事事的日子，绍常内心十分苦闷，在敏华的邀请下，他又回校做教员。一名同事托绍常向敏华求婚，绍常才发现自己已经爱上了敏华，而敏华也深爱着自己。不顾重重反对，绍常与敏华勇敢地结合了。Select can be included in an event, but its result disappears as if it had not been executed.Recently, I have made a preliminary investigation on DDOS attacks, and have some superficial understanding of the causes of DDOS attacks and their detection and defense mechanisms. This paper focuses on some thoughts on DDOS attacks in metropolitan area network environment under traditional network architecture.From the perspective of service, DDoS protection is essentially a war in which users are the main body and rely on anti-D protection systems to compete with hackers. In the whole process of data confrontation, service providers often have absolute initiative. Users can base on specific rules of anti-D system, such as traffic type, request frequency, packet characteristics, delay interval between normal services, etc. Based on these rules, users can better resist DDoS of the seven-layer class and reduce the resource overhead of the server on the premise of satisfying the normal service itself. The detailed schematic diagram is as follows: