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The main reason why DDOS attacks are difficult to defend is that there are too many vulnerabilities and attack methods that can be exploited. In the OSI seven-layer network model used in the network data transmission process, basically each layer has protocols that can be exploited by DDOS attacks. According to the different network levels of the protocols used for DDOS attacks, this paper summarizes the currently known DDOS attack types and their defense measures as shown in Table 1-3. For more detailed information on current DDOS attack and defense, please refer to Huawei DDOS attack and defense summary post.搞了半天尹旭的根本目标还是甬道，是自己大意了。世子爷，我想去如意楼吃饭。Only for users in Suzhou Industrial Park, Xiangcheng District and Zhangjiagang to apply for free charging certificate business:庞取义举枪指向毛海峰，放下我沥海村民，留你们一命。距今一百年前的日本，流行着一种被称为“虫”的神秘生命体，它无形无色，几乎不属于任何一个科属，却可对人类的精神和身体产生巨大的影响。白发独眼的男人银古（小田切让 饰）天生具有特殊体质，他可以感知到虫的存在，并利用这项技能帮助人排忧解难，因此他又被人们尊称为“虫师”。银古跋山涉水，四处云游，曾遭遇专吃声音的“阿牟”、长着四个角的女孩真火（守山玲愛 饰）、传说中的梦幻彩虹“虹蛇”、必须通过誊写虫的故事来将其封印的“禁种之虫”……在这一过程中，银古也不可避免受到虫的影响…………哼。