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The principle is that syn messages are first responded to syn_ack by DDOS protection system. With a specific sequence number (recorded as a cookie). The real client returns an ack and the Acknowledge number is cookie+1. The fake client will not respond. In this way, we can know that the clients corresponding to those IP are real and add the real client IP to the white list. The next access passes directly, while other forged syn messages are intercepted. The following is a schematic diagram of protection:?由于子婴身份特殊，项羽特别调来一队两百人的精兵负责守卫。准提道人再次挥手，玉帝……身死。本剧以0.1毫米的失误也不被容许的脑外科为主题，天海饰演脑外科专家深山瑶子，一方面对工作充满热情，另一方面又抱有抛弃家人的罪恶感。滋啦一声，将罩在外面的衣甲扯开，然后三两下脱了内衣，露出精壮的上身。正值花季的女儿欣妍不幸患上白血病，检查时母亲正梅意外发现女儿竟不是自己亲生。但二十年的养育之情，让正梅忘却杂念。为了女儿得到尽快治疗，她和前夫明远开始寻找女儿的亲生父母。生母夏蓉的平静生活从此被欣妍和其同胞哥哥家辉打乱，为保住现有的家庭，她不敢为欣妍捐献骨髓，但答应承担所有医疗费用。夏蓉终于下定决心面对生母的责任，如愿捐献骨髓使欣妍的身体恢复健康，帮助她实现了“梦幻女生”的梦想。但夏蓉却没有得到大家的理解。面对两个孩子的误解和家庭的轩然大波，她选择了逃避。正梅为使孩子不受伤害，为了维护夏蓉的家庭，她做通了孩子和夏蓉公婆的工作，以真情说服了夏蓉回归到亲人的身边。在亲情与责任、宽容与善良的情感交织中，母爱的勇敢和伟大延续了每个人的信念，生母夏蓉、养母正梅和五妹，以及她们各自的家庭和朋友，都在这场风雨之后重新领悟到人间真情的幸福和可贵。Now, instead of relocating the main culprit of cancer, the Government has intensified its efforts to speed up the construction of the second phase. In other words, in two years' time, more chimneys will be erected here, endangering our health several times! Isn't this a joke on the health and lives of hundreds of thousands of residents in Puyan, Wenyan, Changhe and other places around us? Isn't this the loss of our children and grandchildren?