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The fourth and second levels do not interfere with each other.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. "　　开心小和尚从少林寺调到乌龙寺做主持，使该寺戒律院主管铁空又气又爱，更是搞得县衙门老爷、师爷头痛不已。街头混混百搭阴差阳错成了开心的铁桶师叔，麻烦接踵而来……爹就想着，不管你娘嫁给谁，只要她高兴，爹就喜欢。萨奇和瓦苏约会，被警察阿尔文盯上，在车里发生了不可描述的事……Hit rate +2%Auburn: longan, mango, litchi, tea, camphorwood, cinnamon …