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He said the problem was that he forgot to disable recursive queries on the server, which made his server a tool used by DNS amplification attacks. He explained: "DNS servers can be configured in one of two basic ways. In one possible configuration, the DNS server only provides domain name services (imperative) for the objects it is responsible for serving. In another configuration, in addition to providing those domain name services, the DNS server also searches for any domain (recursively) on the wider Internet that it was not authorized to manage. It is the recursive DNS server that enables the Internet to operate normally. They are also a way of attack. "因此必须要尽快劝劝丈夫。你和我妹妹在一起了？电话一接通，就传来这么一句话。一个年轻女子在神秘的环境下不幸怀孕的黑暗旅程。"We witnessed with our own eyes that these devices were destroyed one by one in front of the attack. The lesson learned is very simple: we can really ease the DDoS crisis only if attacks are curbed before they actually reach these devices. Security devices also have vulnerabilities, as many as the servers we want to protect," Sockrider explained. In order to achieve a better defense effect, we must rely on the support of upstream network operators or hosted security service providers, whose assistance can block attacks from the network system.脾气火爆的篮球名教罗伊在在输掉一场大学联盟比赛后被迫降级，去执教一只屡战屡败的高中球队。在第一堂课上，罗伊眼看着孩子们输掉109分，而且似乎这还不是最坏的……罗伊只能从最基本的东西开始教起，过人、抢篮板球、漏球、投篮，他似乎带给这个球队很多魔力，熔炼工球队也在他的带领下越打越顺，而罗伊也在教授这些孩子的过程中体会到了篮球带给他的那种久违的快乐……