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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.在新登场的第七季中，导演延续了其经久不衰的超人题材，而几名主要角色的生活和战斗剧情，也将该剧打造成了一部动作大片。在本季中，Clark Kent和Lex Luthor之间的关系急转直下，成为势不两立的敌人，而这一情节在超人漫迷中广为人知，也备受推崇。First, Cat5 is referred to as Category 5 and Cat6 is referred to as Category 6. The difference between the two lies in the different spacing of twisted pairs. CAT5 has relatively large spacing, CAT6 has relatively tight spacing and the transmission rate is much higher than CAT5E.昔日是楚汉争霸，如今多了一个尹旭在内，天下的局势又将会向着何方发展呢？历史在这一刻走向了未知。三千英灵地下有知，也能死得瞑目，含笑九泉。In fact, it is similar to putting all the functions and methods of the page in an array, then traversing the array, in turn