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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.《白熊》：托尼（勒诺拉·克里奇洛 Lenora Crichlow 饰）从昏迷中醒来，发现自己在一间陌生的房间里并且失去了记忆。在她昏迷的这段时间中，世界显然发生了翻天覆地的变化，街道上充斥着无情的看客，而她竟然成为了杀人狂追杀的猎物。喜欢做白日梦的DannyReed被闪电劈中后变身为一个女孩，从此这位普通的DIY商店小工变身成为时髦亮丽的女性时尚杂志记者——VeronicaBurton并过上了令人羡慕的风光日子。可惜Danny无所适从，细高跟鞋，女性内衣，还有Veronica的男友Jay，麻烦接踵而至。更让他头疼的是Danny对女性世界一窍不通，还得打肿脸充胖子扮演“时尚专家”背景设在维多利亚时代的医疗喜剧。知县而已。　　与前两集不同《黎明踏浪号》的故事主要发生在海上，因此剧组准备到澳大利亚取景拍摄。此前已经选好的导演迈克尔·埃普特（Michael Apted）仍会继续担任导演，但之前的编剧Richard LaGravanese将被Michael Petroni所代替。彼此之间的距离越来越远。