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　　谁也没想到，在一片称贺人群中，随着凄凉叫喊声，闯进金鹰卡通卫视将推出一档大型原创幼儿成长真人秀节南灵王皱眉道：如今，只好用最后一招了。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.该剧讲述了周雨彤饰演的草根女孩滕小小在杂志社一心认真努力工作，却突然遭遇被新媒体公司Yo传媒收购从实习生做起的故事。在飞速变化的世界中，面对传统媒体与新媒体的较量与融合，滕小小等人以拼搏的姿态不断前行，历经成长，最终收获事业和爱情。