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DDOS attacks mainly occur in the network layer. Its most obvious characteristic is to send a large number of attack packets, consume network bandwidth resources and affect normal users' access. At present, the detection and defense technology for DDOS attacks in the network layer is quite mature, and at the same time, some new attack methods-DDOS attacks in the application layer have emerged. Different from network layer DDOS attacks, application layer DDOS attacks mostly imitate the access behavior of legitimate users and will not generate a large number of attack data packets during data transmission, but they will consume server resources through a large number of database queries and other operations, which is more difficult to detect. According to the different attack modes, DDOS attacks include reflection amplification attacks in addition to ordinary flooding attacks. This type of attack often uses a legitimate server as a reflector, which sends a large number of data packets to the target, thus causing greater harm. At present, DDOS attacks against DNS servers are also common. Attackers often send fake domain names to DNS servers, consuming DNS server resources. At the same time, due to the recursive query mechanism in DNS servers, DDOS attacks against DNS servers have a large impact range.一个从阿富汗战争中归来的士兵，揭发了一个阴谋的情报服务和一个贩毒团伙Women's 1 event.2366Incident: On April 5, 2018, Jin Xingguo came to a police station in Seoul to be investigated by the police regarding his alleged sexual assault in 2016. The abused woman claimed to have been sexually assaulted by Jin Xingguo while drunk after a banquet in November 2016.The specific creation part is determined by the specific class Dress.　　许德才找赵冰求助，引来追杀，两人仓皇逃窜中许德才竟然发现王小兵其实与自己失散十年的女友杨珊有联系。十余年的恩怨此时得以解开，许德才有了深深的负罪感，他决定自首同时让王小兵和杨珊回家乡生活。