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In order to ensure the suspense of the competition,The SYN-Flood attack is currently the most common DDoS attack on the network, It is also the most classic denial of service attack. It takes advantage of a defect in the implementation of TCP protocol. By sending a large number of attack messages with forged source addresses to the ports where the network service is located, it may cause the half-open connection queue in the target server to be full, thus preventing other legitimate users from accessing. This kind of attack was discovered as early as 1996, but it still shows great vitality. Many operating systems, even firewalls and routers, cannot effectively defend against this kind of attack, and it is very difficult to trace it because it can easily forge the source address. Its packet characteristics are usually that the source sends a large number of SYN packets and lacks the last handshake ACK reply of the three handshakes.白胜祖(金贤重)：不仅有着让女生都羡慕的完美外表，而且IQ超高，学习成绩全校第一，非常有运动细胞，财力也是超凡，只是这位让人感叹命运不公平的男生却是个做任何事都不带笑容，性格枯燥无味的冷淡男生。　　吴荷妮(郑素敏)：与白胜祖同校的笨拙专业户，却有着一颗善良，乐于助人的心。自从对白胜祖一见钟情后吴荷妮发奋要改写自己倒数的成绩，并为了感动他做了一件又一件傻事，最终赢得了他的心。深田晃司导演的初连多。脚踏两条船的“渣男”遇上谎言不断，麻烦制造机的”渣女“，关注在男权社会的欲望中被消费的女性像。The paper of the book in Grandma Lily's hand has already yellowed and seems to have been yellowed for some years.可不多不少，就是二百两，革职回家。