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The attacker first completes the three-way handshake to establish the connection, but in the last ACK reply of the three-way handshake, the TCP window size is set to 0, and then a data request is made. When the attack target sends the request result to the attacker, it stops the data transmission when it finds that the TCP window size is 0, and sends out a TCP window detection packet to ask the attacker if the TCP window has been updated. Since the attacker will not update the window size, the attack target will always maintain the TCP connection and wait for the data to be sent, and continuously carry out TCP window size detection. When the number of controlled hosts in the botnet is large, Target's connection table will gradually be exhausted, resulting in denial of service.抗战时期晋察冀三省交界处的北方小城，青云刚嫁到丁家堡，就因日军偷袭而失去丈夫，青云化悲痛为力量，凭借惊人的毅力和智慧，带领全村妇女顽强抵抗日军，誓死保卫家园。起初，青云仅能靠着祖传的拳脚功夫组织女子抗战队被动躲避敌人的迫害，将老百姓陆续转移到安全区。青云等不屈不挠、勇敢无畏的精神，深深打动了驻扎在当地保护共产党物资站的八路军战士何生亮。在何生亮的引导和帮助下，女子抗战队愈战愈勇，还积极发动群众秘密开展工人运动，给了日本人致命的打击.　　小如生性活泼顽皮，却有些傻气，在护校时是一名成绩非常差的学生，勉强毕业后被妈妈托门路送进第五医院，因此她遭到同事的嘲笑和捉弄，在医院里也遇到了精灵古怪的事情，弄得她狼狈不堪。小如渴望成为一名正式的护士，无奈遇见强劲的对手，她的希望渺茫。小如对新分进来的研究生邵剑波一见“烦心”，两人吵吵闹闹中擦出了爱情的火花，不料半路却杀出一高贵、美丽、才能出众的女孩——留学归来的外科医生蔡美云，更要命的是她还是第五医院院长的千金。70年代，家住滨海小城的杜家老爷子有四个女儿，除大女儿远嫁外地，老二美兰嫁给了本厂服务部刻名章的农民何德有，老三美霞违背老爷子意愿和厂子弟学校代课的知青江汉平结了婚；唯有任性的老四美娟待嫁在家。老爷子难以瞑目的重要的原因是一辈子生了四个闺女，而闺女们生的还是闺女，没一个男的。美娟是老爷子的唯一希望，外孙子也是孙子啊！打着小算盘的何德有把厂职工食堂蒸馒头的郑满斗介绍给美娟，俩人从开始的彼此反感到接受对方，之后结婚并生了儿子一鸣，杜老爷子含笑九泉。郑满斗、何德有、江汉平这三个从籍贯出身、脾气秉性、学问手艺、志趣爱好都大相径庭的连襟、三个家庭，风雨相伴走过了大半生。在追求幸福的过程中，他们成为比亲兄弟还亲的外姓兄弟。The answer is simple: try to digest all these requests. There are 300 people coming to the 30-person restaurant, so find ways to expand the restaurant (such as renting another facade temporarily and hiring some chefs) so that 300 people can sit down, then the normal users will not be affected. For the website, it is to expand rapidly in a short period of time, providing several times or dozens of times of bandwidth to withstand heavy traffic requests. This is why cloud service providers can provide protection products because they have a large amount of redundant bandwidth that can be used to digest DDOS attacks.To enter the flight simulator, do one of the following: Click Tools > Enter the flight simulator Press Ctrl + Alt + A (on the Mac + Option + A) The Flight Simulator dialog box appears.Update supports version 4.3 of r1191;