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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. "没等杨长帆说话，杨寿全先急了。一个爵位皇叔还不放在眼里As a result, he only heard him recite the past and said coldly, "Other women can give birth, but you can't change diapers. You are the most melodramatic! "; Q ']/]/b7 R4?