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On the other hand, although DDoS can erode bandwidth or resources and force service interruption, this is far from the real purpose of hackers. As the saying goes, there is no killing without buying and selling. DDoS is only a nuclear weapon in the hands of hackers. Their purpose is either extortion, commercial competition or political stance. Driven by this kind of black interest, more and more people take part in this industry and improve and upgrade the attack methods, resulting in DDoS becoming more and more fierce in the Internet industry and becoming a persistent disease that cannot be overcome worldwide.藤第一中学，男子足球部——。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.Class behavior patterns-Use inheritance relationships to allocate behaviors among several classes.　　对刘必常世人们还不太了解，但是他是不亚于三星和现代的巨富。崔国焕所做的就是为这个家族处理一些私事。如果是公事，会有强大的法务团出面解决，但是法务团无法搞定的事情，比如逃税，非法勾当这些事情就由崔国焕来做。崔国焕选择的自己的接班人就是道玄。崔国焕选择道玄的理由是他的出众的能力和没有任何家族的背景。陈启看了一下时间，现在已经九点多。听说他弟弟黎水受伤了。