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3 蜥蜴的尾巴CDN refers to the static content of a website distributed to multiple servers so that users can access it nearby to improve the speed. Therefore, CDN is also a method of bandwidth expansion, which can be used to defend against DDOS attacks.商界精英顾青裴上任第一天，董事长就把管教不了的儿子原炀扔给了他。年轻气盛的原炀烦透了顾青裴虚伪的精英面具，可碍于父亲原立江的压力，这让原炀体会到这世上还有拳头和钱解决不了的事情。原炀为了摆脱受制于人的生活，不断地给顾青裴制造麻烦,但顾青裴一一轻松化解。原炀请好友帮忙调查，终于掌握了顾青裴的把柄，两人之间的战争就此展开......外星机器入侵地球，掠夺地球自然资源，无情的屠杀居民，人类数量急剧减少，在一个偏远的乡村，饥饿的人们已经变得和外星机器一样危险，一个19岁的女孩莎拉·康诺利，绝望的与一群试图摧毁她父母农场的土匪对抗……喜欢听相声的人，一碰面少不了要提郭德纲和于谦。两位算是相声界的最佳拍档，哥俩合作十几年，一直配合默契，可谓是“我中有你，你中有我”。《德云社郭德纲从艺30周年相声专场太原站 2019》我们一起相约看大师级别的相声演绎，体验开怀大笑。If an attack is detected, the management center will start a cleaning scheme to pull the mixed traffic of attack traffic and normal traffic through BGP, CDN, etc. Pull the mixed flow to the flow cleaning center for cleaning. The problem in the process of traffic cleaning is that the current DDOS attacks present a mixed attack state with multiple attack methods coexisting. In this case, how to efficiently detect attacks is the main problem currently facing. After consulting numerous data, Huawei's "seven-layer cleaning plan" is found to be very enlightening. The scheme comprehensively analyzes data packets for mixed traffic through seven layers of defense measures such as static filtering, abnormal message filtering, scanning and snooping message filtering, source legitimacy authentication, session-based prevention, feature identification filtering and traffic shaping, so as to detect attack traffic to the greatest extent. The framework of Huawei's "seven-layer cleaning scheme" is shown in Figure 2. After the traffic is cleaned, the attack traffic is discarded, and the normal traffic is injected back into the network through MPLS, GRE tunnel technology, etc.Norton 360 version 2.0/3.0/4.0/5.0/6.0 for 64-bit OS only