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那狼吃疼，嘴下用力——玉米肩膀剧痛，冷汗一冒，手上就松了。一个杭州，只为我？也不仔细想想，火烧杭州有半点好处么？不杀你，又不做点什么，他们肯离去么？他们服我么？……能喝粥了么？胡宗宪再次避过头去。永平帝认定紫茄和秦霖有私情。We call a collection of rules that have the same functionality a table, Therefore, we can place rules with different functions in different tables for management, and IPTables has already defined four tables for us, each table corresponds to different functions, and the rules we define cannot escape the scope of these four functions. Therefore, before learning IPTables, we must first understand the function of each table.Step 2: Study User NeedsImagine a scene where there is an electric lamp with only one switch on it. When the light is on, press the switch at this time and the light will switch to the off state. Press the switch again and the light will be turned on again. The behavior of the same switch button is different in different states.In addition, it is recommended that you collect the posts written by the two bosses.