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System.out.println ("observer2 has received! ");黄夫子咽了下口水，道：女娃儿有长辈教导也够了，她们无需外出做事，将来不过是嫁人，相夫教子……想他潜心至学六十载，难道教孙女还不够？红椒忽闪着大眼睛对老头儿道：黄爷爷学问当然好了。Six months no longer part of the Organization, the Coopers have to live their lives without being spies. That changes their lives forever. But when K.C finds out that Ursula has been torturing them, the Coopers have to strike back to get Judy back and to eliminate Ursula.也不像香荽，表面乖，其实最不安分，一肚子古怪问题，他是真乖。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.