In TCP implementation, when receiving the SYN request from the client, the server needs to reply the SYN + ACK packet to the client, and the client also needs to send the confirmation packet to the server. Usually, the initial serial number of the server is calculated by the server according to certain rules or adopts random numbers. However, in SYN cookies, the initial serial number of the server is obtained by hash operation and encryption of the client IP address, client port, server IP address, server port and other security values, which is called cookie. When the server suffers from SYN attack and makes the backlog queue full, the server does not reject the new SYN request, but replies the cookie (SYN serial number of the reply packet) to the client. If it receives the ACK packet from the client, the server subtracts 1 from the ACK serial number of the client to obtain the cookie comparison value, and performs a hash operation on the above elements to see if it is equal to the cookie. If equal, complete the three-way handshake directly (Note: At this time, you don't need to check whether this connection belongs to the backlog queue).
该剧以一个最普通的中国家庭为线索，讲述了一对传统的父母和他们的五个子女，在20世纪90年代发生的悲欢离合故事
Wang Sulong is on the stage of "I am a Singer".
After all the preparations were ready, we went to Nandashan Town, Yuanjiang City, Hunan Province, the destination of our college students' summer social practice activities in the countryside. Nandashan Town, Yuanjiang City, Hunan Province, is located on Dongting Lake 800 miles away. It is rich in aquatic resources and has its own characteristics. It is famous for its rich wild snakehead. There is a vast lake continent outside the embankment, with an annual output of 4000 tons of wild snakehead. There is a wild snakehead stocking area of 5000 mu in the embankment, with an annual output of 1000 tons and an annual output value of 1. The total number of farmers engaged in the snakehead industry in the whole town reached 3,000. Last year, the snakehead industry alone increased the income of 600 yuan. In recent years, the town party Committee and government have taken wild snakehead cultivation as a pillar industry for rural economic growth and have taken various measures to encourage farmers to raise snakehead. In 1998, Nandashan Town Ophiocephalus argus Breeding Cooperative was established to provide prenatal, intrapartum and postpartum services for the whole town's Ophiocephalus argus Breeding specialized households. Four service centers have been set up, namely, Ophiocephalus argus Breeding Feed Service Center, Ophiocephalus argus Breeding Technology Service Center, Information Service Center and Intensive Sales Service Center.
Don't say what Jia Lian will think after listening to Lin Huiyin's words, and no matter how the Jia family reacted after seeing Jia Lian go back alone, after settling down in the small courtyard of the Lins,...
经过一番生与死的搏斗真相终于大白，在高尔偷录的录音带指证下，关伟成功侦破霸基现任总裁路易斯唆使杀人案。而小灵与浩天的结局，也在浩天为小灵注入还原骨髓后，让小灵回归山野水域，与人和平共处。
First, business skills
Chapter II Supervision Institutions
不知道独孤求败的玄铁重剑和这屠龙刀、倚天剑，谁更厉害？文小桃想道。
殷太常之子殷隼乃是当朝虎将，其女青女更是早已许婚太子。大势所趋之下，识时务的殷太常开始阻止青女与太子的交往，并极力想在新的王朝确立自己的地位。谁料青女痴情于太子，并梦见太子回朝。
1986年，汉城亚运会期间，韩国举国上下沉浸在体育竞技的热闹氛围之中。但在位于韩国西南部的极乐岛上，却发生了惨绝人寰且扑朔迷离的连环杀人案。极乐岛位于大海中央，岛上只有17为居民，人们安居乐业，质朴风趣，尽职尽责的于成友大夫关爱大家的健康，是岛民们最为依赖的外来者。适逢70岁高龄的金哲英爷爷寿辰，岛民们聚在一起饮食歌舞，畅玩通宵。可就在次日清晨，两名电工遭人残忍杀害，岛上一时间人心惶惶。人们议论纷纷，相互猜忌。在此之后，残忍的凶手并未收手，而是展开新一轮的屠杀。 名为极乐的小岛，变成最为恐怖和血腥的人间地狱……
In real life, there are many requests that cannot be made by one person. For example, the salary at the interview may be decided by the technical manager if it is less than 10,000, but the salary between 10,000 and 15,000 may not be approved by the technical manager and may need to be approved by the technical director.
张杨立即站起身，对英王抱拳道：臣恳请王爷传太医来。
This.parent = parent;
本剧中，江北单亲妈妈玄敏珠与丈夫离异后，独自一人艰辛地抚养着儿子振宇，儿子就是她生活的重心。为了能让已上初中的儿子接受到更好的教育，敏珠决定搬家到江南。高昂的房价，沉重的教育费用负担，使她不得不加倍努力赚钱，甚至是到卡拉OK陪唱。就这样，玄敏珠开始了在江南的“追赶”生活，加入到江南妈妈们的教育狂潮中。一系列有趣的故事也随之展开…… 世事无巧不成双，敏珠家的房
民国时期，关中名医金郎中，因受诬陷下药不当将剿匪司令何雷鸣妻子致死，被逼全家跪行为何妻送葬。金郎中为洗血耻，带大儿子金治国和土匪田川挖掘何家祖坟，意外得到珍贵的秘方。金郎中顿生恶意，将田川埋在坟中，但却将其子收养。金治国无生育能力，为了家族的兴盛，金郎中强迫二儿子金保国与大儿媳荷花同房，生下一子。土匪为报杀父之仇抢夺了何家刚刚出生的龙凤胎，两个孩子一个落入匪巢，一个流落金家。从此，荷花暗藏着对小叔的情感，含辛茹苦抚养着三个孩子。同时土匪也精心抚养着何家的孩子。 十八年后，金郎中靠着秘方，迁入西安开设五味堂振兴家业，名声显赫。然而当几个孩子分别知道自己的身世后，金家接二连三发生了重大的变故…… 面对上辈人留下的苦果，面对着自己的错位生活，面对着错综复杂的恩怨情仇，孩子们各自走上了不同的人生道路。当一次又一次的打击伤害扑面而来时，并没有击倒善良柔弱的荷花，反而使她变得更加坚韧大度，显示出关中女人特有的胸怀和品质……
季木霖看着他，忽然说：有没有人告诉过你，你撒谎的时候会咽不下饭？徐风夹着菜的手一顿，这才意识到自己的两个腮帮子都鼓鼓，原来竟是半天都没有吞咽的动作。
黎水见他走近，欣喜地仰脸叫道：大哥。
