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Achievements cannot be made alone.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.他不知道帐外，项羽和尹旭彼此交换个眼神，淡淡的兴奋一闪而过。可是眼下，她一点笑的心情也没有，策马直奔户部衙门。新潮、自负、个性、叛逆、痴狂，E时代的大学生在家庭及社会为他们编织的网络生活里是怎样勾勒他们的梦幻田园呢？伴随着牛仔、电玩、街舞、迪尼斯乐园、cosplay、快餐文化长大的新一代独生子女们，同样有着他们的快乐、困顿、艰辛、痛苦的种种境遇。本剧描绘了一群正值敏感的青春期，涉世未深，天真无邪的五名女大学生（海灵、如云、林敏、艾薇、诗诗）怀着对音乐的热情和痴迷，克服种种困难自组G5乐队，为了在乐队大赛中胜出并在演艺事业中实现自己的梦想，他们经历了种种打击和磨练，从个人英雄主义、小资情调、生性怠惰、胆小怕事等各种不良习性中摆脱出来，彼此理解，相互扶助，共同走向成功。