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不发一弹，全给我挨打。Attached, casually tested a game主要講述中文老師盧文達（劉俊謙飾演）奈何教績強差人意，教學生涯一直徘徊在淘汰邊緣。同時校長（智叔飾演）計劃將學校轉為直資學校，而出身清貧、曾受惠於學校創辦人有教無類宗旨的林副校（秀雯飾演）認為此舉有違書院的辦學理念，不想讓學校變成貴族學店而設法阻止。於是她以轉長約為條件成功威逼利誘盧文達為她效命，暗中施計企圖拉倒轉直資的方案。这人因跟苏文青交好，才不避嫌告诉他们这些的。Can be set to the path you want to install.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.The above figure shows a simple model of CSRF attack. The user visits malicious website B. The HTTP information returned by malicious website B to the user requires the user to visit website A. However, due to the possible trust relationship between the user and website A, this request will be executed just like what the user actually sends.