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Updated on September 12, 2018If 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.就在武林大势底定的同时，天下霸业一统，卧薪尝胆的六祸苍龙，终在大起大落之后，再次创造了自己的王朝，成为一代共主；超凡智者寂寞侯，法门传人无名，以及身怀绝技的千流影…，六祸苍龙的紫耀皇朝已经具有当世无双的势力。无奈天下太平，天下止争的做法却掀起武林新风暴。伴随着六祸苍龙暴政将起，一代神人素还真重出武林，准备推翻六祸王朝，与一代智星寂寞侯正面对抗。两名顶尖智者的对决，究竟在这场双方运筹帷幄的棋局中，会写下怎样的历史？异度魔界偃旗息鼓，究竟在盘算什么呢？Rights Protection Story 1那位可是小有名气了，福建南平的教谕，能升上来也算有本事。In Word2010, five columns are provided by default: one column, two columns, three columns, left and right. You can select the appropriate column type according to actual needs, or you can customize the column type.