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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.故事讲述了，一件发生在的日本海上自卫队装配有宙斯盾系统的战舰上的故事，小兰由于被卷入其中，柯南不得不为了青梅竹马再次出马。 去年国内会在9月底10月初上映剧场版的第十六弹「第十一个前锋」，但恰逢中日钓鱼岛争端，于是这次放映基本黄了，而这次剧场版干脆连自卫队都有了，估计来年引进的希望也不大了。(1) How to realize seamless docking on adjacent surfaces?刚才的素姑娘长相就不用说了，但她身上缺少一种精气神，我就不细说了——便是背后，议论人短长也是不好的，况且她病得那样，更不好说她。Https://mp.weixin.qq.com/s? __biz=MzI5MzY2MzM0Mw== | = 2247484237 & idx=1 & sn=a02b4576bac88de4089a259d3da3ccb9 & chksm=ec6f44ddb186d5b57eb61af95a7edbf24d4012fa640a9382e2e99f236f0215f2b3953658297 & scene=38 # wechat_redirect讲述在银行工作的5名女白领升野、真纪、小峰、纱英、酒木非常要好，她们在更衣室、休息室和下班后小酒馆里一起谈论服饰美容、恋爱困惑或者抱怨上司。若是怀着些目的，那也不算真心了。