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TelecommunicationsPersonality Index:."Improving the ideological consciousness, civilized quality and scientific literacy of the cadres and the masses, enriching learning contents and resources, and innovating learning methods and organizational forms" is also an important role of the learning platform of "learning power".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.如之前媒体猜测的一样，昆汀的新片将是一部通心粉式的西部片。从片名看，本片很明显是在向意大利西部片的经典《迪亚戈》致敬。同时，新片《被解放的迪亚戈》剧情梗概也一并公布：我们的主人公迪亚戈是一名获得了自由的奴隶，他将在一名德国裔的赏金猎手的指导下成为一名粗鲁的、无法无天的赏金猎手。他将协助那个德国的赏金猎手缉拿各种通缉犯以换取报酬，并且在德国人的帮助下追寻自己的奴隶妻子并试图在邪恶的大农场主手里解救她。The CMD command was modified to the background. We know that if the process in the container runs in the background, the container will not run. Now we use this to build a V5 version image: