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Since its basic attack principle is backlog overflow that depends on the end host connection socket, an obvious end host-based solution is to increase the backlog queue size, and this method has been widely used in most servers. Increasing the backlog queue is usually done by modifying the application's listen () function call and an operating system kernel parameter SOMAXCONN, which is used to set the upper limit of backlog that an application can receive. This method itself cannot be completely considered as an effective method to resist SYN flooding, even in some operating systems that can effectively support super large backlog queue allocation, because attackers can arbitrarily generate datagrams much larger than the backlog supported by their operating systems.Modern PentathlonIf we want to delete rule 3 in the above figure, we can use the following command.厚道善良的饭店厨师楼志军（张国立 饰）家里有三个可爱的孩子，长女小语（种丹妮 饰）学习优秀，善解人意；儿子小新（石云鹏 饰）阳刚十足，敢于担当；幼女小婉（冯茗暄 饰）聪颖可爱，无奈患有先心病。一家其乐融融，根本让人看不出他们彼此没有任何血缘关系。偶然的一个意外，让楼师傅得知自己患上了名为遗传性神经性共济失调的绝症。在死亡面前，他似乎更担心三个未成年孩子的未来。在得知养父的情况后，三个孩子意外懂事和坚强，让楼师傅在欣慰之余也萌生了为他们找到亲生父母的念头。在此期间，楼家得到了同在饭店工作的女人佟爱玲（牛莉 饰）的帮助，而许多人看到启事后前来认领孩子，但始终没有结果。《如果没有》互联网特点鲜明，每集约十分钟，由固定的演员演绎不同人物之间发生的独立小故事，故事以搞笑为主，穿插着温情、催泪的元素。所有的故事都是在“如果没有”某种事物的前提下发生，如：如果没有手机，将会发生一个什么样的故事？如果没有爱情，将会发生一个什么样的故事？该剧意在使观众在发笑的的同时，引发他们对生活的思考。EXAMPLE 4电影讲述了十年前两个留守儿童性格泼辣的燕子（郑湫泓 饰）和逆来顺受的陈路（卿雯 饰）在遇到在乡村支教的张老师之后，人生发生了转折的故事。