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As a result, an exception occurred when newChannel was used, and a FailedChannel was returned after catch, while the outside call thought that it must be a DatagramChannel.单纯以军事对抗来看，若是没有韩信，众人都不看好刘邦。一名沉默的司机带着命中注定的乘客，前往一个未知的目的地。剧集由六个恐怖的故事组成。该剧将于3月13日播出。211. X.X.26故事发生在20世纪60年代的韩国，居住在某个乡村的贫穷青年许三观（河正宇 饰）喜欢上了同村最美丽的姑娘许玉兰（河智苑 饰）。传闻玉兰是小混混何小勇的女朋友，但是三观凭借锲而不舍的精神和憨皮赖脸的劲头说服了未来的老丈人，如愿抱得美人归。婚后数年，夫妻二人先后育有一乐、二乐、三乐三个机灵调皮的儿子，一家人的生活也有滋有味。但是一乐越来越像何小勇，引来村里人议论纷纷，这让许三观坐立不安，而他对玉兰、一乐的感情似乎也由此发生了变化。在那个卖血成风的年代，三观曾经用自己的血换来了钱。令他想不到的是，在接下来的人生里，他将不得不为了家人们一次次卖血，苍白羸弱，命在旦夕…… 
　　本片根据余华的小说《许三观卖血记》改编。 校园里一群青春烂漫的孩子，各自有着不同的家庭背景，生活经历和性格特点。他们相遇在一起，演绎出一个个普通而又不平凡的故事。从懵懂中成长的一群孩子，在老师的教育，家长的指导以及同学的影响和帮助下，走过人生一段重要的旅程。When a client accesses a server's web service, The client sends a message to the network card, The tcp/ip stack is part of the kernel, Therefore, the client information is transferred to the web service in user space through the kernel's TCP protocol, At this time, the destination destination of the client message is on the socket (IP: Port) that the web service is listening for. When a web service needs to respond to a client request, The destination destination of the response message sent by the web service is the client, At this time, The IP and port that the web service listens on becomes the origin instead, As we said, Netfilter is the real firewall, It is part of the kernel, Therefore, if we want the firewall to achieve the goal of "fire prevention", You need to set up checkpoints in the kernel. All incoming and outgoing messages have to pass through these checkpoints. After checking, those that meet the release conditions can be released, while those that meet the blocking conditions need to be blocked. As a result, input checkpoints and output checkpoints appear. These checkpoints are not called "checkpoints" but "chains" in iptables.