九九九九伊在人线综合75

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.影帝“穆廷州”，是个“母胎solo”的高冷男神，却阴差阳错地在一次意外后“失去记忆”，他认定自己是来自古代的“太傅”，而明薇是他的“公主”，自此对明薇毕恭毕敬又管东管西。男女主的思维交汇不断在古代和现代交错穿插，他们的日常画风也是格外“错乱”，穆廷州会在化身太傅后每日打电话向女主请安：“微臣穆昀，遥拜公主”，也会身着笔挺的西装当着众人的面向女主行跪拜之礼。One by one, the maids entered Chunhui Hall with all kinds of things in their hands and looked at those common or unusual things. Even if they were as bad-tempered as the princess of Shu, they felt a little more confident."Animals? Is it our common animal? Still can fly? What is that?"芬兰“国宝级”动画全新3D版，充满好奇心和理想主义的姆明一家，和一群富有想象力的朋友，将带领我们在神奇的姆明谷里进行田园诗般的探险。It mainly refers to the construction of cross-station statements by using the vulnerabilities of the program itself, such as the cross-station vulnerabilities existing in showerror.asp of dvbbs.