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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.Bai Jugang, born on November 2, 1993 in Jiangyou City, Mianyang City, Sichuan Province, is a male pop singer and film actor from mainland China. He graduated from the Vocal Music Department of Sichuan Normal University's Conservatory of Music with Grade 2012.Hearing this, Grandma Lily secretly shed tears.特务组织要派年仅27岁的“黑桃Q”回大陆组织一次特别的特务行动，黑桃Q要了一大笔钱，他要先去一趟日本。黑桃Q找到了他的干爹,是这名老特务把黑桃Q带进军统的。那时黑桃Q还是个孩子，黑桃Q说自己要潜回大陆，黑桃Q说自己一生的事业、前途、本事都是干爹给的，他怕没有机会回来孝敬干爹了，所以专程来日本看望干爹, 黑桃Q跪着给干爹敬酒,干爹很高兴，喝了酒，却中毒倒地。 黑桃Q对着干爹的尸体说：不是你，我不会变成鬼……彦博只好用自己的学习的专业知识证明自己的清白。后来彦博、泽琛、小柔三人都成为了各自领域的精英，一起携手合作揭破了一宗又一宗迷离案件，但谜团还是不断出现，甚至威胁到了他们的生命危险……