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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.兔子镇和狐狸镇是几百年的世代宿敌，邪恶的狐狸军团一直想攻占美丽的兔子镇，不过兔子镇却一直被一个拥有神秘力量的“守护宝典”保护着。为了占领兔子镇，狐狸长官派最聪明的发明家火狐狸叮咚潜伏进入兔子镇内部盗取守护宝典，不过这只表面凶恶实则内心善良的火狐狸叮咚却渐渐被兔子们的善良真诚感染。火狐狸在兔子镇找到了发明的意义，懂得了和平友爱的真谛，深深爱上了这个美丽的小镇。但就在这时狐狸长官下令进攻兔子镇……ガード下の出来事 菅原文太 川上たけし然而某天她的丈夫突然离开了她，毫无预警的她需要尽快想出她的新出路；对其他人来说，由家庭主妇变成上单口秀，显然是个惊人的选择，但对米琪而言却并非如此。印度少女妮哈始终站在角落，见杨长帆家人都散去，这才凑上前来，以一种卑微的眼神询问，而后望向桌上的残羹冷炙。大越王朝已经成为一个强大的帝国。Is a network card, an IP,