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Now, let's imagine why these "checkpoints" are called "chains" in iptables. As we know, The purpose of a firewall is to match "rules" for passing messages, Then execute the corresponding Action, So, when the message passes through these checkpoints, You must match the rules on this level, However, there may be more than one rule on this level, But there are many rules, When we put these rules in a chain, A "chain" has been formed. Therefore, we imagine each "checkpoint" as shown in the following figure. In this way, it is more appropriate to call them "chain". Each message passing through this "checkpoint" must match all the rules on this "chain". If there are qualified rules, the corresponding actions of the rules will be executed.oil和aump只是泛泛相识，两人相互还都十分不对盘。男主oil的妈妈想要抱个孙子，招聘代孕的，而aump就是应聘的女主，面试合格后，两人被安排到小岛上去生小孩。当他们两见面的时候，震惊原来是对方，aump不肯干了，她乘船逃跑，不幸的是，那船半路就死翘了。所以还是oil，把她给领回来。但她还很不领情，在小岛上，他们根本不能好好相处，可是又被迫呆在同一个房间里，只有一只床，一张被子～aump凶巴巴就是不让oil跟自己睡同张床，小吵不断，互不顺眼。一次的英雄救美后，aump开始对oil改观，俩渐渐开始和睦相处，一起散步阿，划船阿，海滩漫步阿，跳舞阿等等。逐渐他们开始互相萌生爱意Founded in 2011, Osaka Weaving House has spent 6 years opening more than 600 stores in more than 200 cities across the country. However, Tmall's new retail sales have brought its performance to a new level. COO Wang Bo of Osaka Weaving House revealed at a new Tmall retail open class last week that during 618 this year, the sales volume of Osaka Weaving House Tmall Smart Store tripled, the unit price of customers increased from 184 yuan to 310 yuan, and the number of customers increased 168%.Recommendation Order投资大佬A联合一线网红PA先生在号称宇宙第一招标会现场被黑客入侵，转天一个名为“网红猎人”的微博账号爆出一系列PA先生与幕后资本勾结愚弄大众的系列黑幕，同时声称对入侵发布会“负责”，顿时舆论哗然，“网红猎人”由此进入公众视线，并宣布会定期爆料网红圈的惊天黑幕，一时间网红江红人心惶惶，人人自危。 　　一间毫不起眼的街头书店里，暗门被打开，三位年轻人走了进去，网红猎人的LOGO赫然在目，暗处的3D投影亮起，一个模糊的背影出现在幽暗的空间里，书架上的老式收音机开始沙沙作响，不久传来低沉的女声：猎人们，你们的下一个目标是…… 　　从此，网红江湖里出现了一个名为：“网红猎人”的神秘组织。TCB (TCP? Transport Control Block is a transport protocol data structure that contains all the information of the connection (in fact, in many operating systems, it is a queue used to process inbound connection requests. The queue holds TCP connection items that are in a half-open state and items that have established a full connection but have not yet been extracted by the application through an accept () call). The amount of memory occupied by a single TCB depends on the implementation of TCP options and other functions used in the connection. Usually a TCB has at least 280 bytes, which in some operating systems has exceeded 1300 bytes. The SYN-RECEIVED state of TCP is used to indicate that the connection is only half open, and the legality of the request is still questioned. An important aspect worth noting here is that the size of TCB allocation space depends on the SYN packets received-before the connection is fully established or the return reachability of the connection initiator is verified.白坡乡是宁安县最闻名的穷乡乱乡，被人们称为“百破乡”。近十年间，县委派去了七拨乡领导班子，换一茬，烂一茬。 新任女县委书记何春红，提议有胆识、有魄力的吴候乡副书记王天生，赴白坡乡任党委书记兼乡长。王天生到白坡乡上任第一天就对乡干部约法三章，并向村干部们提出，“公道、廉洁、勤政、惩恶、扬善”，“上经济奔小康、富乡、富村、富民”的号召。随后一系列令人意想不到的事件纷至沓来，如女孩装疯告状、煤矿采空区村民上访、宅基地纠纷、作局陷害副乡长包养情妇等，王天生临危不乱，办事果决，惩治村霸，为民伸张正义，坚决清除恶势力和腐败分子！率领白坡乡六万父老乡亲，过好日子奔小康……