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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.His short adventure for their help: Lanlan (plant-dyeing team head at our shop), Lekui (text and photograph) and Solav (translation and revision)范紫，范青等人得到消息之后，也并不惊讶。A? Delete old version of docker? (if any)　　这是一部基于朝鲜建国的历史事实上，添加有关恶灵和驱魔主义题材想象力的作品。围绕着太宗和两个儿子忠宁、让宁之间错综复杂的欲望，以及与觊觎这份欲望的恶灵展开对决。讲述没有足够力量推翻古王朝的李成桂和先祖穆祖、翼祖、桓祖为了建国而寻求教皇厅的帮助，教皇厅支持朝鲜建国，以取代佛教国家“高丽”。为了获得全新的臣民，当时动员的是西域的驱魔师以及驱魔师召唤来的不死生物，朝鲜建国后，被李氏王朝彻底杀害的隐匿的不死生物们再次复活而引发的故事。　　张东润将在《朝鲜驱魔师》中饰演的忠宁大君是因为相信所有天赐之物都有存在的理由，所以可以对所有人贫富贵贱无差别对待的人物。　　甘宇成在《朝鲜驱魔师》中饰演太宗，他是为加强王权、排除外戚，不惜牺牲许多无辜的人，最终甚至会抛弃亲儿子的人物。　　朴成勋将在剧中饰演的是唯我独尊、充满自信的让宁大君，他拥有权力指向型的火辣性格，为建设自己的王国，与支持自己的大臣们一起，使朝鲜陷入了混乱之中。　　郑惠成则饰演"国巫党"巫华一角。失去了所有的家人，独自一人幸存下来。从七岁开始就充满了神气。十岁那年开始被培养成巫女。故事围绕一个一年级学生暗恋一个男人,直到有一天他有机会接近他你不是怀疑我们吗？那就搜查吧。