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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.达英和正硕交往已经六年多了，达英在朋友与家人的双重压力下很想早点结婚，但正硕却迟迟不肯结婚。成英因教授引荐进入一家公司做实习生，遇到从美国来的帅哥酷男俊元。正硕和兰姬终于步入结婚礼堂，达英心有不甘又能奈何。达英享受单身生活，轻松愉快找工作却处处碰壁、心灰意冷，失望之极，父亲无意间得知达英已经离职，拿了一笔钱给达英出国旅行……她们没有赚到任何的钱，只能靠花Yuanjai的钱度日。某日，Tomorn伸出援手为Yuanjai偿还了借款，因此她决定让Tawan代替Yhardfah和他结婚。《你好外星人》是2014年爱奇艺和拉风传媒联合出品的青春校园科幻剧，该剧由师从世界名导今村昌平、新藤兼人的亚洲导演张加贝和邱晓军联袂执导，罗金泉担任监制，来自中韩两国的偶像艺人集体倾情出演，堪称一部具有韩剧风格、美剧节奏的中国青春偶像校园科幻剧。本剧由爱奇艺、PPS联合热播，开创了网络“青春科幻爱情剧”之先河。继《来自星星的你》后，韩国外星欧巴再度帅气来袭，“神话”组合成员、人气韩国男星辉灿领衔出演“超能”外星少年，与你暑期相逢，开启一场梦幻般的“异星”校园恋情。2014，与你恋爱谈到外太空。Num出身豪门，独子，父严母慈，生活幸福。后来父亲和居心叵测的女佣私通，赶走了Num母子，父亲发现女佣的私情，争执中被女佣的情人杀害。Num长大后，母亲也去世，有个外国警察叔叔一直帮他。总是趁机虐待她，Jui亲眼目睹Num的父亲被害的真相，无可奈何。Jui聪明、坚强、善良，女佣对她非打即骂，但她还是尽心服侍，毫无怨言。女佣继承了老公的产业，不过不擅经营，全靠Jui用心打理。 　　两个完全没有交集的人竟发生了一段曲折离奇的摩擦...The first type is implemented through the relationship between the parent class and the child class.And what Wang Zeduan said about him, Liu Guangyuan, who provided oral memories earlier, He was the only survivor of the four soldiers who had rebuilt the minefield at that time. In the memory just now, He has been blaming himself for running back alone as the first-line witness of that year but failing to save his comrades. At that point, I choked up several times and couldn't speak, and asked that I didn't want to think more about the events of that year. I respected his request, so I didn't urge him to ask, and I didn't record the information about this period of history from Liu Guangyuan's perspective. It was still regrettable from my heart, but fortunately, Wang Zeduan's memory filled the gap to a large extent.