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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.(Update 11.29)同时拥有显赫出身和悲痛过去的卡路尔·阿巴斯（花江夏树 配音），以庶民的身份和无血缘的妹妹艾丽尔（竹达彩奈 配音）登上伊斯拉，前往凯格斯高中飞行科学习。伊斯拉是一座漂浮在半空中的陆地，由巴雷特洛斯共和国等三个国家共同管理。在动力的驱动下，伊斯拉开启了遥远的征程，前往传说中的圣泉寻找“天空的尽头”。然而仅有极少数领导层成员知道，伊斯拉此行还有另一个不可告人的使命。卡路尔偶然邂逅了贵族女孩克莉亚·库鲁斯（悠木碧 配音），他们彼此互生好感，并结成飞行训练搭档，但卡路尔却不知晓他和这个女孩有着怎样痛苦的孽缘。满怀理想的少男少女遨游长空，等待他们的是何等严酷的命运……现实世界中的外科医生吴妍珠（韩孝周 饰）听说了身为著名漫画家的父亲失踪的消息，于是赶到父亲的工作室寻找线索，偶然地进入了人气漫画《W》的世界。2016年的首尔，相同的空间、不同的次元，与漫画男主人公姜哲（李钟硕 饰 ）在现实与虚幻中交错展开的悬疑浪漫爱情故事。光阴如梭，昔日的小姑娘已经出落得亭亭玉立，并成长为坚强、自信、能力超群的执法者。在同样富有天赋的搭档Tess（Nina Lisandrello）的帮助下，Catherine侦破了许多悬案，成绩令人刮目相看。但在调查最近一起谋杀案的时候，Catherine发现了一些奇怪的证据－－报告显示Vincent Keller医生（Jay Ryan）2002年丧生于阿富汗战场，但Catherine发现他还活着。不仅如此，他正是当年救她一命的恩人。出于某种神秘的原因，他过去10年被迫生活在人类社会之外，小心谨慎地守护着他的秘密－－他是一项军方秘密实验的参与者，那次实验出现严重问题，导致Vincent身体产生变异。当他被激怒的时候，会变成一种强力、敏捷、可怕、无法自我控制的怪兽。Catherine答应替Vincent保守秘密，作为交换条件，Vincent将协助Cath..