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2, is to use a proxy class to call the original method, and control the results. This method is the proxy mode.In terms of curriculum content, such APP products mostly inspect a single knowledge point in the form of games. The curriculum system is relatively weak and lacks explanation and guidance of knowledge points.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.真的要到了刀兵相见的时候，也能起到缓冲作用。"Then you didn't take any remedial measures at that time?" I asked.在发现自己有姓病后，迪伦必须和每一个和他发生过姓关系的女孩联系，让他们知道这个坏消息。