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Compared with SYN cache method, SYN? Cookies technology does not need to allocate space at all when receiving a SYN. Because the most basic data that make up the connection state are encoded and compressed into the sequence number bits of SYN-ACK. For a legitimate connection, the server will receive an ACK message segment with a serial number (actually the serial number has been added by 1), then the basic TCB data will be regenerated, and a complete TCB will confirm that the data will be safely instantiated through decompression. This decompression can be successful even under severe attacks, because there is no storage load at all on the host side, only the load that calculates the encoded data into the ACK sequence number. The disadvantage is that not all TCB data can be added to the 32-bit sequence number segment, so some TCP options required for high performance cannot be encoded. Another problem is that such SYN-ACK message segments will not be forwarded (because forwarding requires complete state data).BBC America过去宣布拍摄8集惊悚剧《嗜血娇娃 Killing Eve》，该剧由Phoebe Waller-Bridge负责，现定于美国时间4月8日首播。该剧根据Luke Jennings的小说系列改篇，《嗜血娇娃》主角分别是一个有精神病的刺客Villanelle及在追捕她的Eve（吴珊卓/Sandra Oh饰）。Eve是个生活无聊﹑十分聪明﹑工资等级的英国安全局人员，后勤的工作无法满足她当间谍的幻想；至于Villanelle（Jodie Comer饰）是个优雅﹑有才的杀手，她依偎着这暴力工作能带给她的奢侈生活。这两个聪明的女人互相对对方着迷，并进行了一场史诗式的猫捉老鼠游戏。其余演员包括Fiona Shaw﹑Kirby Howell-Baptiste﹑Kim Bodnia﹑David Haig﹑Sean Delaney及Owen McDonnell。胜利集团老总乔胜利的儿子乔晓东过生日，同一天生日的维修工刘成无意中带走了一份重礼，因此锒铛入狱。出狱后的刘成适逢农村家中变故，父亲重病不起。刘成因此对乔胜利充满了仇恨，开始酝酿报复乔胜利、夺取乔家财富。刘成冒充外交官的儿子混入上流社会，他偶然认识了王若萱并爱上了她。一次游玩中刘成救了乔晓东，他得以进入胜利集团工作。乔晓东和王若萱十分投缘，两人很快相爱，暗恋着王若萱的刘成心中充满了嫉恨。刘成暗中调查乔胜利的污点，并将证据透露给乔胜利想以此敲诈，不料乔胜利对此不屑一顾，却把刘成提拔到总部工作。刘成招待客户时在歌舞厅碰到了妹妹险些暴露身份，刘成为掩盖身份竟以暴力威胁妹妹回老家。王若萱的父亲王大洪为加入胜利集团，拉拢刘成为他们工作，心机狡诈的刘成反将王大洪当成了自己打击胜利集团的棋子。他利用王大洪同乔胜利的情敌关系打击乔胜利，并为王若萱和乔晓东的感情设置障碍。乔胜利忽然发现乔晓东不是自己的亲生儿子，原来乔晓东是当初抱错的农民的儿子，自己的儿子在那里？乔胜利陷入了苦苦寻找之中。乔晓东瞬间一贫如洗，5.美女罐I still remember that the central idea of this text is to tell you that you can become a useful person through diligence, and that as long as you can study a skill for a long time, you will be able to master it and use it freely.Advantages: Solves the problem of thread insecurity.