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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.韩庆却一点也不尴尬，笑得眉眼俱开。官方表示，这是一款经长时间构想而成的作品，拥有着独特的幻想世界观以及充满个性的登场人物。　　「情人节篇」：黑泽&安达将共度第一个情人节，安达收到本命巧克力，大醋王黑泽有情敌！ ？父母离奇失踪之后，12岁女孩米雅被安置在一所寄宿学校里。游戏设计师爸爸给米雅留下一本神秘大书，米雅可以通过正确的密码，从现实穿越到书里的精灵王国中去。在精灵王国里，米雅和精灵王子阿莫、精灵战士小优成为了好朋友，并一起保卫王国和精灵们，用团结、智慧和勇气，一次次打败女魔头潘西亚的阴谋诡计。精灵王国有奇异的花草，梦幻般的景色，还有可爱的独角兽。寄宿学校的几个女孩经常欺负米雅，但每当米雅从精灵王国回到现实生活后，她的心灵便得到更多成长，鼓励她用强大乐观的心去面对生活中遭遇的困难。这是一部让女孩学会勇气、智慧和心灵美的片子。