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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.杨长帆也觉得挺寒酸的，如此威风八面的千户，竟然连这点事都做不了主，当然这也说明千户也没那么富裕，不然没必要跟个镯子较劲。　　咸鱼要上天，暑期能上映！延续《风犬少年的天空》创作班底，将于暑期上映。(Neutral Current Sense)　　男主角车民偶然意外得到了能使人复活的珠子Abyss，和女主角一样非正常死亡，因此他通过Abyss复活成了律师事务所的高挑超帅花美男事务长（安孝燮饰）。 并通过Abyss过上了此前从未体验过的上位1%的外貌生活。　　Camila Mendes饰演主要角色，充满自信﹑机智﹑口才了得的高中二年级生Veronica Lodge，从纽约回到河谷镇，就为了重新开始，摆脱因为她父亲丑闻而布来的影响。/cat (cat)