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特七大怒，却也不忍眼见兄弟惨死，僵在原地挥拳骂道：卑鄙。等到了隔壁敞轩，极目远眺，只见远山近谷、树木房屋都覆盖着皑皑白雪，唯有山谷中那河流和湖泊在白雪映照下呈黛青色，所谓白山黑水，莫过如此。Update to the latest version that supports 7.1. 0;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.她们才走一会，从村里涌出一群庄稼汉，扛着钉耙锄头、担着箩筐等物，来到这间破院内。