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In TCP implementation, when receiving the SYN request from the client, the server needs to reply the SYN + ACK packet to the client, and the client also needs to send the confirmation packet to the server. Usually, the initial serial number of the server is calculated by the server according to certain rules or adopts random numbers. However, in SYN cookies, the initial serial number of the server is obtained by hash operation and encryption of the client IP address, client port, server IP address, server port and other security values, which is called cookie. When the server suffers from SYN attack and makes the backlog queue full, the server does not reject the new SYN request, but replies the cookie (SYN serial number of the reply packet) to the client. If it receives the ACK packet from the client, the server subtracts 1 from the ACK serial number of the client to obtain the cookie comparison value, and performs a hash operation on the above elements to see if it is equal to the cookie. If equal, complete the three-way handshake directly (Note: At this time, you don't need to check whether this connection belongs to the backlog queue).那如果自己投降呢？他们没有刘邦那样的救星，终究还是死路一条。在纳粹德国，玩具制造商拥有一本神秘的书籍，赋予无生命的生命。在躲过希特勒命令取回书的党卫军之后，这位玩具商登上了一列火车企图逃离该国。认为他很清楚，玩具制造商很快就发现，一批高级纳粹军官也加入进来。最终，他的秘密被揭露出来，纳粹关闭。但是，玩具制造商已经使用这个神奇的东西来带来一个名叫罗伯特的复古娃娃来生活 - 而罗伯特将毫无阻碍地保护他的主人。所以，当玩具制造商和杀手娃娃拿起纳粹时，就开始了一场血腥的战斗。这是对死亡的一场战斗，只有胜利者才会在下一站下车。NTP magnification attack从司马懿戎装佩剑意气风发，到诸葛亮手持白鹤羽扇挥斥方遒，都预示着一场场对战呼之欲出。究竟是空城计、六出祁山，还是上方谷之战呢？本剧中，妈妈姐姐弟弟妹妹把全部的家务都交给小学生美子，她厌烦的过着每一天。因为想从无趣的现实中逃脱，她站到了某样东西的前面——那就是哥哥扭蛋机，只要投入硬币，就可以召唤出哥哥。哥哥分为S级、A级、B级等的不同级别。美子小小的手拿着硬币，投进去一扭，美子说，我想要一个温柔的哥哥。从那天起美子的世界全然改变了。因为她得到了许多哥哥，总是笑着的哥哥，帅气的哥哥，看起来有点恐怖却总是默默守护的哥哥······梦幻般的哥哥不断出现。美子最终究竟会选择哪个哥哥呢——这是一部比选老公更认真，寻找理想哥哥的极致幻想曲。