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Application scenario of proxy mode:午夜2点，玫瑰园小区附近突然响起枪声，市外贸局长裘成贵倒在血泊里，市刑警支队副支队长朱光奉命接手此案，公安局长南平却收回命令，要朱光把案子交给副支队长史金浩负责……很快，整座太和殿，连同殿外军士都振臂高呼。该剧生动反映了80后一代当下的情感、奋斗以及重重压力下内心的挣扎。2010年，中国的80后开始步入三十岁，这一现象已引发全球的关注。《30岁，你好》就是在这个大背景下应运而生的，《30岁，你好》也开了80后影视作品之先河，让杜淳、马苏、林继东、隋兰这几大主演为80后的一代人在剧中过起了“三十大寿”。电视剧《清宫绝恋之美璃格格》改编自雪灵之的人气小说《殇璃》，剧情讲述了美璃（李晟饰）与素莹（王珂饰）共同纠缠于一个男人——靖轩（何晟铭饰），三人上演了一场爱恨纠葛的痴情故事。由著名台湾“偶像剧教父”沈怡倾力打造，李晟、何晟铭、王珂等当红偶像领衔主演。SYN attack is a kind of DOS attack. It takes advantage of TCP protocol defects and consumes CPU and memory resources by sending a large number of semi-connection requests. SYN attacks can not only affect hosts, but also harm network systems such as routers and firewalls. In fact, SYN attacks can be implemented as long as these systems turn on TCP services no matter what systems are targeted. As can be seen from the above figure, the server receives the connection request (syn=j), adds this information to the unconnected queue, and sends the request packet to the client (syn=k, ack=j+1), then enters the SYN_RECV state. When the server does not receive an acknowledgement packet from the client, it retransmits the request packet and does not delete this entry from the non-connection queue until the timeout. With IP spoofing, SYN attacks can achieve good results, Typically, clients forge a large number of non-existent IP addresses in a short period of time, SYN packets are continuously sent to the server, and the server replies to the confirmation packets and waits for the confirmation of the customer. Since the source address does not exist, the server needs to continuously resend until it timeout. These forged SYN packets will occupy the unconnected queue for a long time, normal SYN requests will be discarded, the target system will run slowly, and in serious cases, the network will be blocked or even the system will be paralyzed.