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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.几十年来，科学家们一直在推测木卫二可能是除地球之外，太阳系中唯一一个有大量液态水存在的地方。因为木卫二的表面照片与地球海洋上的冰的照片相似，冰壳上布满了各种陨石撞击留下的坑坑洼洼，不少科学家推测，在木卫二的冰壳之下或许有着太阳系中最大的液态水海洋，海洋下面可能存在着有单细胞生命。而这一“生命可能”的理论正是电影《欧罗巴报告》的核心。Originated in Egypt more than 3,000 years ago, it spread successively in Mediterranean coastal countries. The 23rd BC ancient Greek Olympics was listed as a competitive event.本剧讲述三个特种部队的优秀军人，退伍 后走上不同道路的故事。4. Builder Model失忆的夕小灰从天而降摔落在三不管，涂涂声称小灰是他的救命恩人，并将无名饭店赠予她打理。原本人来人往的无名饭店现在空无一人，小灰决定聘请大厨改变现状，此时沐白、将夜同时出现。而在人间的夕小灿找到捉妖师，准备对付小灰。解放初期，湘西匪患严重，国民党残党败部与当地土匪勾结，为害乡里，当地民众怨声载道。人民解放军剿匪小分队队长、人送外号“东北虎”的刘玉堂，带领剿匪小分队深入大山，和匪首田大榜、钻山豹、独眼聋以及国民党女特务四丫头等反动势力展开一连串殊死搏斗。剿匪小分队在付出巨大的牺牲之后，终于将匪患根绝。