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A TCP connection is a quad, and a connection is uniquely determined by the source IP, the source port, the destination IP and the destination port. Therefore, if C wants to forge the packet from A to B, it should fill in the above-mentioned IP header and TCP header with the source IP, source port, target IP and target port. Here B is the server, IP and port are open, A is the target we want to attack, IP certainly knows, but the source port of A is not clear, because it may be randomly generated by A. Of course, if we can find out the rule of generating source port for common OS such as Windows and Linux, we can still do it. In addition, we can step on the connection port of Car A through a large number of controlled hosts.Collegiate a cappella group the Barden Bellas enter into an international competition that no American team has ever won.　　上一季中，虽然黄眼魔鬼被消灭，但是地狱之门大开，数以百计的魔鬼涌入人间，黑暗将笼罩这个世界，Sam（贾德·帕达里克 Jared Padalecki 饰）和Dean（简森·阿克斯 Jensen Ackles 饰）将面临前所未有的艰巨使命。与此同时，他们还有着各自的问题：Sam终于了解了自己为何被黄眼魔鬼选中以及它对自己的所作所为。Dean和魔鬼定下了契约救回了Sam，但一年的期限近在眼前，Sam是否真的就是原来那个温柔善良的弟弟。而在人类一方，那些魔鬼猎人也组织起来共同对抗出逃的魔鬼，他们中还有人也将矛头直指Sam和Dean。5. The installation of MindManager mind map software is completed. As shown in the following figure, we can close the installation interface and open the software to experience by clicking on the completion of the interface.　NBC剧集《我们这一天》宣布一次性续订2、3季，这部Dan Fogelman打造的大热剧是这个秋季档收视人数第二的广播网剧情剧。新续订的两季还是每季18集。11月20日（周日），东都体育场。灰原等少年侦探团和江户川柯南兴致勃勃地观看足球比赛。与此同时，毛利侦探事务所的电话突然响起，是大规模爆炸的预告电话！这并不是游戏，也绝非虚张声势。就像对小五郎的挑衅一样，道路上的汽车就在他眼前发生了爆炸！要阻止接下来的爆炸只有一个办法，就是解开犯人留下的谜样的暗号！他提上两个包袱，就这么走到县衙门前，递上了一纸文书，以及一个平淡到连一丁点味道都没有的表情。