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听完使者的说法，尹旭才知道，玉娘和苏角都认为自己直接率兵前去，所以还在番邑等待自己。一个将死的靖军营指挥使努力撑起身子，腰腹间露出肠子，对葫芦伸手喊道：去……去救将军……镇北将军……快呀……快去……搬救兵……话未说完，又倒地不起。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.　　该剧改编自职场小说《沉默警报》，以报社为背景，讲述职场记者们的生存与良心，是一部充满人情味的职场剧。将从记者这一特殊的职业出发，描写引发共鸣的职场人的悲欢与苦恼。也不管几人迟疑的目光，张良转身问刘邦道：沛公，随身携带的礼物呢？…,刘邦这才道：是了，刚才情形紧张，竟没有机会献上。