SYN attack is a kind of DOS attack. It takes advantage of TCP protocol defects and consumes CPU and memory resources by sending a large number of semi-connection requests. SYN attacks can not only affect hosts, but also harm network systems such as routers and firewalls. In fact, SYN attacks can be implemented as long as these systems turn on TCP services no matter what systems are targeted. As can be seen from the above figure, the server receives the connection request (syn=j), adds this information to the unconnected queue, and sends the request packet to the client (syn=k, ack=j+1), then enters the SYN_RECV state. When the server does not receive an acknowledgement packet from the client, it retransmits the request packet and does not delete this entry from the non-connection queue until the timeout. With IP spoofing, SYN attacks can achieve good results, Typically, clients forge a large number of non-existent IP addresses in a short period of time, SYN packets are continuously sent to the server, and the server replies to the confirmation packets and waits for the confirmation of the customer. Since the source address does not exist, the server needs to continuously resend until it timeout. These forged SYN packets will occupy the unconnected queue for a long time, normal SYN requests will be discarded, the target system will run slowly, and in serious cases, the network will be blocked or even the system will be paralyzed.
《来自深渊》动漫改编自土笔章人创作的同名漫画作品，讲述了在这个拥有巨大洞穴“深渊”的世界中，想要成为像母亲一样优秀“探窟家”的莉可，遇到了一个失去记忆的人形机器人雷吉，一场充满惊险与欢乐的大冒险也随之展开了。
家族经营酒庄生意，富甲一方的祝家大小姐祝言之，个性活泼开朗，平日喜以男儿身打扮于城中四处游玩。因缘际会遇上协助追捕大盗的少侠梁仲山，对他留下一个好印像。
Remind again: When a rule is overloaded, the existing rule will be overwritten.
四丈便四丈，我叫人跟你一起去量。
汪正松能怎么处置，一团乱麻似的，不理出头绪来，这案子就成了悬案了，还影响前面张家的案子。
2. As a Cheng Yuan who has been engaged in machine learning for more than two years, seeing the computer series you recommended also thinks it is very unreliable. I have read most of the books you recommended. In particular, novice readers are not recommended to read "Introduction to Algorithms" and "Data Mining: Concepts and Technologies". These two books are thick and heavy. Although the content is also good, you will not know the year of the monkey when you finish reading them. What does a novice need? It's getting started! Secondly, have you really finished reading Python Core Programming? This book is not for Python newcomers. It is very thick and difficult. It is very unfriendly to newcomers. And if you just want to be AI, then many parts of this book don't need to be used. Is web development and Django framework really necessary for our AI engineers? No. Xiao Bai has no distinction between key and non-key points in a book. He spent a lot of time learning unnecessary knowledge, which really does more harm than good. Giving guiding and targeted recommendations is responsible recommendation.
改编自真人真事，探讨印度农村家庭普遍没有厕所，妇女必须在野外如厕的现象。女主角担任教师，嫁给男主角后，发现家中没有厕所，和男主角“闹离婚”，还来了一场革命。
魏铁和钱明听了，不由分说，上前将青鸾公主拽出来，跟捆绑货物似的，把她裹成一个大粽子，下手毫不怜香惜玉。
九岁的安东尼和七岁的达米安是一对兄弟，和英国每一位孩子一样，他们每天上课下课、出去玩耍，日子过得平淡无奇。某一天在路上，他们捡到了一只帆布背包。这是在一场银行抢劫枪战中掉落的背包，里面足足装有237000英镑，但问题是，当时正直英镑统一换成欧元的特殊时期，所以这些英镑必须在一个星期之内花完。兄弟俩很快意识到了这个包的价值，他们商定，在没有决定怎么处理这笔钱之前，绝对不能告诉父亲。 达米安是一个教徒，曾经得到过圣人的指点，常常把时间花费在学习如何成为一个圣徒上。他觉得精神上的享受比物质上的受用更加有意义。而哥哥安东尼是一个现实主义的实践派，像每一个热血的资本家一样，他甚至已经开始为这笔钱开始考虑汇率、通货膨胀和成本方面的问题了，还学会了用金钱去买新同学的友谊。一个认为钱是上帝的恩惠，所以应该用它救济有需要的人，而另一个希望用它来享受人生，兄弟俩怀着不同的目的，开始为说服对方而努力……
If you pass the re-examination, you will pass the physical examination. After passing the political examination, the examinee can fill in the Air Force Flight Academy in the college entrance examination. As long as the test score exceeds the minimum undergraduate admission line, you can be admitted. The two levels of political review and achievement are relatively easy to pass.
这可不是边疆，这是京城。
人性即神性，人性即魔性！”隐居于蜀山中的峨嵋派开山祖师长眉真人（洪金宝饰），铸炼出捍卫人间正道的镇邪之宝“紫青双剑”。然而，在一次决斗中，“紫青双剑”互相排斥不肯合一……负起匡正世道的使命，并必须寻回“紫青双剑”以战胜邪道。在正邪交战之际，丁引和瑶池宫主的宿世姻缘、侠女李……
In the http protocol, the http header has a continuous "\ r\ n\ r\ n" as the end flag, and many web servers will wait for the header transmission to end before processing the http requested mop information. Therefore, if the web server does not receive a continuous "\ r\ n\ r\ n", it will always receive the data and maintain the connection with the client.
AvaDuVernay联手《绿箭侠》编剧JillBlankenship为CW开发DC漫改新剧《娜奥米Naomi》。剧集讲述十多岁的Naomi,从自己所在的西北小镇到多元宇宙的旅程。当一场超自然事件深深影响到了她的家乡,Naomi决定对其起因一探究竟,而她的发现将颠覆人们对身边超级英雄的认知。故事基于2019年开始发行的同名漫画系列,由BrianMichaelBendis和DavidF.Walker撰写,JamalCampbell绘画。
Communicate with the medical management department and apply for relevant funds and financial support to ensure the effective implementation of MDT work; Pay attention to the problems that affect the safety of MDT diagnosis and treatment decisions.
上世纪九十年代末，戏剧学院大一学生小庄，为了追随青梅竹马从新兵连桀骜不驯不守规矩的典范，到为了兄弟情谊报名参加狼牙集训，再到残酷疲惫的层层“除锈”选拔训练，并最终和老炮、强子、耿继辉、史大凡、邓振华等人一起，成为了每年从几十万陆军中挑出的六名新锐，组成狼牙特种大队孤狼特别突击队，小庄从一个穿着军装的艺术青年，而逐渐触摸到军人的灵魂，并逐渐爱上了中国陆军。他和孤狼特别突击队的队员们一起，同生共死，在各种实战演习中屡建奇功。在一次赴边境配合武警侦察剿灭贩毒武装的战斗中，一举清除了盘踞在祖国西南边境的毒瘤……
历史上刘邦出秦关之后，裹挟各国诸侯王，以总计五十六万大军杀入彭城。
