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? ? ? ? ? ? Yum install-y yum-utilsThe detection and defense of DDOS attacks should be considered as a whole system from three different stages before, during and after the attack.兄妹们议论一回，喜气洋洋。描述在化妆品公司宣传部工作的主角红河梅秘密享受美食的故事。因为年轻就被提拔为宣传部leader的梅，因为谁都羡慕的美貌和身材，周围的人都说她在饮食上很用心，但她在下班后却期待着一个人在饮食连锁店喝酒，有着意外的样貌。作为美国FBI最优秀的警犬，特警11号和它的训导员多年来破获了多起大案，立下了汗马功劳。这一次又是在特警11号的协助下侦破了黑帮头目桑尼的贩毒案。桑尼对特警11号恨之入骨，他发誓一定要让特警11号从这个世界上消失。A friend taught me a method that impressed me deeply. A cloud service provider promised that each host would protect attacks below 5G traffic, and they bought five at one go. The website is set up on one of the hosts, but it is not exposed to the users. The other hosts are mirrored and are used to face the users. DNS will evenly distribute the traffic to the four mirror servers. Once there is an attack, this architecture can prevent 20G of traffic. If there is a bigger attack, then buy more temporary hosts and continuously expand the image.