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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.1. The product life cycle includes introduction period, growth period, maturity period and recession period.　　但他内心深处能感觉到少了一份对自己非常重要的东西，他决心一定要找回这段遗失的过往。过程中，云海邂逅了蒋媛（谈莉娜饰演），他误以为蒋媛就是自己做梦梦到的那个女孩的身影，两人擦出了爱情火花。历经周折，后来，端木看见雨荨很伤心，生气将云海推到了寝室的栏杆上，云海与雨荨的点点滴滴都浮现在脑海中。终于恢复了记忆。蓦然回首间却发现蒋媛对自己的爱恋已经深到无法自拔。云海和雨荨的感情遇到了新的危机。宁城首富陆永年，虽已富甲一方，却仍有遗憾。因大太太沈容不能生育，陆永年遂把希望放在二太太韦一娴身上。韦一娴果不负期望，替陆家生下一名女婴，取名陆明珠。沈容虽已收养一子浩中，但毕竟不是陆家的骨血，思及未来，心生恐惧。二更求粉红订阅。这个女人，还想把闺女嫁到刘家来，真是做梦。