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If an attacker sends a large number of SYN requests with fake source addresses, the server side will consume a lot of resources to handle this semi-connection, and saving traversal will consume a lot of CPU time and memory, not to mention retrying SYN + ACK on IP in this list. TCP is a reliable protocol, and messages will be retransmitted at this time. The default number of retries is 5. The interval time of retries is doubled from 1s to 1s + 2s + 4s + 8s + 16s = 31s respectively. After the fifth time is sent out, it will take 32s to know that the fifth time has timed out, so the total is 31 + 32=63s.若是汉军真的会从褒斜谷中进军，倒是完全可以加以防备。姐姐得了白血病，从小被父亲抛弃的妹妹不记仇隙，献上自己的骨髓。姐姐得救，她的恋人却爱上妹妹。姐姐把隐痛埋在心底，在妹妹遭遇车祸失去生育功能后，她以自己的卵巢帮助妹妹重做一个女人和母亲。妹妹怀孕后又得绝症，为了孩子，也为了她刻骨铭心的爱的结晶，她用自己的死为孩子打开新生命的通道。爱情、亲情、友情从这对姐妹的磨难中回到各色人等的心间，生离死别的打击面前，是超越私利的人间真情和无私的奉献。爱，因此强大，生命，因此而崇高无畏。这是一部直面生死的爱情绝唱，一对同父异母姐妹血肉互献的爱的礼赞，更是一个年轻母亲以生命抒写伟大母爱的动人颂歌！由香港无线电视制作的现代时装医务纪实电视剧《妙手仁心3》是《妙手仁心》系列的第三辑，监制戚其义与编剧周旭明的黄金组合更是精心打造此辑“妙手系列”。此辑剧集在风格上延续了前两辑经典之处，一如既往的得到医务人员协助实景拍摄，继续讲述医护人员在工作中的点滴故事。于是，方威便和板栗一起骑马回去叫小葱。奈绪和矶村勇斗双主演《演绎屋》，故事讲述扶树（矶村勇斗 饰）在结婚前一天被人冤枉性骚扰，因而同时失去未婚妻和工作。决定轻生的他正要从大楼屋顶跳下时，看到一名女性尖叫逃跑。女子被一名持刀男性袭击，连在场的扶树也遇刺。结果这一切只是该名女子艾卡（奈绪 饰）受客户所托而演的一场戏。扶树从艾卡口中得知【演绎屋】（被客户委托扮演指定角色的一种职业）的存在后，就决定雇用艾卡对让他蒙受冤罪的犯人复仇。同时艾卡也打算把扶树拉进【演绎屋】以实施她自己的复仇，于是两人就在彼此的复仇中成长及相恋。As the server's network equipment, routers, switches and other infrastructure have a certain upper limit on the processing capacity of data packets, when the arriving data path packets exceed the corresponding upper limit, the problems of network congestion and slow response will occur. Attackers can use this feature to control a large number of hosts to send data packets to the target machine, causing network equipment to be busy, making normal requests unable to be responded to in time, resulting in denial of service.