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DDOS attacks mainly occur in the network layer. Its most obvious characteristic is to send a large number of attack packets, consume network bandwidth resources and affect normal users' access. At present, the detection and defense technology for DDOS attacks in the network layer is quite mature, and at the same time, some new attack methods-DDOS attacks in the application layer have emerged. Different from network layer DDOS attacks, application layer DDOS attacks mostly imitate the access behavior of legitimate users and will not generate a large number of attack data packets during data transmission, but they will consume server resources through a large number of database queries and other operations, which is more difficult to detect. According to the different attack modes, DDOS attacks include reflection amplification attacks in addition to ordinary flooding attacks. This type of attack often uses a legitimate server as a reflector, which sends a large number of data packets to the target, thus causing greater harm. At present, DDOS attacks against DNS servers are also common. Attackers often send fake domain names to DNS servers, consuming DNS server resources. At the same time, due to the recursive query mechanism in DNS servers, DDOS attacks against DNS servers have a large impact range.在遥远的地方，有一个洋溢着各式各样的童话故事、可爱和快乐的国家“童话国度”（Märchen Land）。然而，恶之皇帝皮耶罗（Piero）把“童话国度”的女王彻底封印。精灵糖糖（Candy）随即前往地球，寻找传说中的战士“光之美少女”。转学生星空幸接获一本从天而降的绘本，里头的精灵糖糖竟然实体化。直到下课时，她被扯入异次元世界，只见皮耶罗和糖糖正在对峙。幸决定接受糖糖的求救，变身成“乐天使”。此后，她将和学校中的四位同学成为“光之美少女”，一同聚集象征幸福的“治愈饰物”（Cure Decor），好让女王复活对抗敌人。Http://bbs.a9vg.com/thread-5284828-1-1. Html我的爱，在消失……ChannelId爹，你就睁大眼睛瞧好了吧。