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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.峨眉派长老一听到这话，顿时须发皆张，怒火冲天，悍然出手。A1.1. 5 Sensory examination.杨舟打开电脑，点开启明。青年阿拉丁（凯文·亚当斯 Kev Adams 饰）在一次偶然的事件中得到一把神灯，触摸这把神灯就会出现一位神仙来满足他的愿望，穷小伙阿拉丁爱上了王国的公主（凡妮莎·吉德 Vanessa Guide 饰），但邪恶的魔法师百般阻挠…1948年3月，已经在东北站住了脚的解放军，在林彪的领导下，已经发展为近50万大军。毛泽东、周恩来、任弼时等离开西北来到河北与刘少奇、朱德等会合，并讨论了当时形势，毛、朱等及时把握战略决战时机，命令东北野战军南下北宁，强攻锦州，切断东北蒋军退华北的路。以彻底残灭东北国民党军卫立煌集团。林彪为了有把握，提出先打长春，以围点歼灭沈阳援敌。经过毛主席多次做工作，1948年7月，林彪决定按毛泽东意见办，南下攻击锦州。此期间，蒋介石对东北蒋军的撤、守，也犹豫不绝，出于政治利害考虑，终于没有下从东北全部撤至华北的决心。1948年9月12日，辽沈战役终于在毛泽东的坚持下打响了。10月14日，东野主力向锦州发起总攻，31个小时便克锦州。接着，长春宣告解放。未几，沈阳、营口亦相继解放。在东北野战军南下北宁线同时，华东野战军胜利举行了济南战役，中央军委决定发起淮海战役。