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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.Later, Jiang Yong's little arm was abruptly rotten, Only two arm bones were left poking at it white and dense. He cried out in pain, but we had nothing to do. Apart from not seeing anything, the time was too short. From being splashed by this green liquid to rotting small arms to leaving only bones, the whole journey took at most about 5 seconds. Even if we didn't flush with water, it was estimated that we could delay another 2 or 3 seconds.第四季的剧情从尼尔在第三季季终时的逃亡开始。正当FBI总部对尼尔的搜索行动因为一个对尼尔穷追不舍的探员（麦凯·费弗，Mekhi Phifer客串演出）而不断升温之时，彼得也离开了FBI，去寻找尼尔。　　刘大脑袋和王云婚姻有点‘小情况’，原因是刘大脑袋发展得特别好，事业很顺畅，这样一个女秘书可能是看上了，怎么想也不知道，但就是对刘大脑袋特别好，于是刘大脑袋就心猿意马了......