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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.郑长河惊喜地问：这是真的？他并不知道这事，张槐先派的人来只跟青木说了，郑氏等人刚才过来，茶还没喝一口呢，就顾着说黄瓜和锦鲤的事去了，因此，他和郑老太太都还不知道。B. Short track speed skatingContinue to more, I heard that the difficulty of purgatory is finally going to be updated, so I just said two words.MindManager: MindManager supports many types of formats. Can be exported to PPT, picture, Word, PDF, swf and other types of formats, can be perfectly compatible with Microsoft Office, output quality is high.剧情讲述故事中的女孩儿从一个小胖子逆袭了，变瘦变美了，变成了一个女神，但她心里依然保持着最初的初心和善良，脱胎不换骨的故事。