So let's explain the rules of iptables in a common way. There was an analogy before, Each "chain" is a "checkpoint", Every message passing through this "level" must match the rules on this level. If there is a match, The message is processed correspondingly, For example, you and I are like two "messages" at the moment. Both of you and I are going to enter the customs at this moment. But the duke has a life, Only the imposing person can enter the customs, Those who do not meet this requirement are not allowed to enter the customs. So the soldiers guarding the customs followed the "rules" formulated by the duke. I began to look at you and me. In the end, you entered the customs smoothly, and I was rejected. Because you met the standard of "dignity", you were "released", while I did not meet the standard, so I was not released. In fact, "dignity" is a kind of "matching condition", "release" is a kind of "action", and "matching condition" and "action" form the rules.
2. Technical interview, technical interview principle is the same, here not to say much, directly paste the code:
Https://www.jiemian.com/article/2083146.html
Efficient DDoS Attack Detection and Analysis Tool FastNetMon
时光一晃，六七年岁月转瞬即逝。魏氏夫妇已育有一双子女。魏端本供职于某政府机关，他老实诚恳，迂腐木讷，以稀薄的工资支撑着这个小家；田佩芝虽为人母，却始终保持着天真活泼的性格，难耐贫苦无聊生活且虚荣浮华的她迷上赌博，从最初的小打小闹到后来的大出大进，导致家中的生活愈加捉襟见肘，夫妻间的口角也成家常便饭。
Use excellent mode = leave work on time
故事围绕美国退休情报官员的绝密度假胜地展开。
Previously, we compared the operation of checking IPTables rules to "check" in "add, delete, change and check". In this article, we will talk about how to "add, delete and change" IPTables.
德华（刘德华饰）喜欢打牌，以打牌为生的他出名好牌技好牌品，与他相恋多年的咏琪（梁咏琪饰）因为牌品差，始终没能与德华结为连理，令她顿足。德华的弟弟天乐（古天乐饰）知道哥哥要以打牌为生养活患有痴呆症的母亲和正在读书的自己，决定跟青云（刘青云饰）打牌比试，谁知连连落败。
指着人头攒动的街道为难地对赵锋道：可是将军，你看这里……赵锋道：这里咋了？有人打架闹事了？人家老百姓啥也没干，你还不许人家瞧热闹、卖东西？大路朝天，他们想从哪过就从哪过。
胖女孩欲桓是一个胖胖圆圆能吃能玩的女孩,不同于别的胖女孩,她敢于面对生活,即使不受男生喜欢,也能玩的很嗨。有一天奇迹发生在了她的身上,她穿越回了唐朝，在这里她遇到了对她万分疼爱的寿王李瑁。欲桓在现代从来没有一个人跟他表白,在这里她第一次感受到了爱情的存在，于是成为了寿王妃,开元二十五年武惠妃逝世,寿王寿王妃二人前去拜见唐玄宗,唐玄宗悲痛欲绝,看到欲桓后感觉自己梦中女子出现在了自己眼前,眼神透出淡淡的爱意,心里想要的就是欲桓,可欲桓现在是自己儿子的妃子,该如何去争去夺,旁边的董贵妃把这一切看在眼里,一心想成为皇后的她会去怎么做,一场剧烈的夺桓之战正式拉开......
一宗骇人听闻的无头女尸血案，一个被削官去职流放关外的总兵官，两者竟有著千丝万娄的关系……江南名捕佟林(郑少秋饰)为寻失踪爱妻翠娘(何晴 饰)追至古北口，镇上突然发生无头女尸案，林即参于查办。 途中两差押送被贬之总兵官赵无忌至，投宿悦来客栈，栈内龙蛇混杂，杀机满布，老板海大娘(郑佩佩)与女儿海棠(张庭)亦被牵连其中，后更与赵之旧部属儿(黄文豪)一起营救赵。一切就绪，林发现无头尸身份竟与朝中拥赵派有密切关连，真凶竟然是……？
Telecommunications
本作品是一部恐怖电视剧，在女性限定公寓“女士大衣叶鸟”中所说的话成为现实，住民们不断地被非言灵的东西折磨着
讲述了特种兵王周扬、肖克二人在对边境黑势力清剿活动中，因战友惨死，陷入深深的不安和自责中进而消极颓废，却最终在面对黑势力的反扑中两位兵王再度联手，与黑势力展开了正义与邪恶的终极对决。
