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).
北魏，有个小女孩叫花木兰（徐娇饰演小花木兰），与父亲花弧相依为命。她受父亲影响从小偷练武功，私学阵法，武艺高强。木兰（赵薇饰演）十八岁时，游牧民族柔然犯境，军情紧急，魏国全民征兵。木兰不忍年迈的父亲再上战场，便灌醉父亲，违抗军令，悄悄地替父从军。
2001年，已经十年没有回到阿富汗的Ben被派到阿富汗去寻找一位线人。他带领着一队充满纪律的队伍。但是，他的任务并没有想象中那么简单。他们这特种部队被困在阿富汗危险的战争之中。而且，本来寻人的任务看来是一个陷阱。
"Leaves dyed blue"
黄豆点头道：不错。
东汉末年，军阀混战，百姓流离失所，邪教主宏魔，趁机残害百姓，欲挑起华夏大地的动乱。为解除百姓疾苦，慈航主动领旨，投胎为兴宁国妙庄王三公主妙善。妙善从小聪慧异常，有一颗慈爱的善心，因此遭到宏魔嫉恨，采取各种卑劣的手段，欲加害妙善，致使妙善差点被妙庄王问斩。后妙庄王患恶疾生命垂危，而妙善的两个姐姐均以各种借口拒绝为父尽孝救命，危难时节，妙善毅然剜目断臂，献出双手双眼，使父王痊愈。妙庄王得知救命恩人是妙善时不禁老泪纵横，捶胸顿足，痛悔莫及。当妙善得知两位姐姐有难时，更是义无反顾，大智大勇，斗败了凶残的青狮，救出了水深火热之中的妙清、妙音及被囚的妙庄王，班师回朝。从此举国欢腾，百姓祥和。
Chapter VI Supplementary Provisions
天公作美，三日都风和日丽，不仅徽王府内部问题解决了，与苔湾府相对密切的族长也纳了两位儿媳。
Article 6 The qualifications of fire-fighting facilities maintenance and testing institutions are divided into Level 1, Level 2 and Level 3, and the qualifications of fire-fighting safety assessment institutions are divided into Level 1 and Level 2.
电影是一部“藏族题材”悬疑影片，讲述了圣山村突发的一起命案，让原本平静的山村被惊悚笼罩，无论是悬崖下狂奔的尸体，恐慌的村民，坠亡的村霸，还是消失的村长，神色慌张的情侣…都让恐怖不断发酵，惊悚持续升级。影片逻辑缜密，全程烧脑，悬念十足！迷局真相让人心生惊骇！
已经订婚的Leonard（约翰尼·盖尔克奇 Johnny Galecki 饰）和Penny（凯莉·库柯 Kaley Cuoco 饰）终于决定要结婚了！他们不邀请任何亲朋好友，飞去拉斯维加斯快速举行婚礼。在路上Leonard向未婚妻坦白了一个秘密，这让他们之间产生了裂痕。长跑多年、即将结婚的Leonard和Penny能否顺利完婚？
影片讲述了一代天骄成吉思汗的早年生活。俄罗斯著名电影导演谢尔盖·博德罗夫指导的有关讲述成吉思汗生平的电影《蒙古王》。《蒙古王》拍摄历时4年，分别在中国，蒙古和哈萨克斯坦取景，一共耗资1500万欧元，这个投入按照俄罗斯标准来说非常多。电影中的宏大制作是成吉思汗与其兄扎木合(中国演员孙红雷扮演)对阵的那段。仅此一段的拍摄就耗资200万欧元，试镜工作花费了2个月。
In this blog, from theory to practice, the system introduces iptables. If you want to know iptables from scratch, you can check the list of iptables articles, and the direct link is as follows.
人的价值是由纳瓦·君拉纳拉、沃拉娜特·旺萨莞主演的泰国爱情电视剧。该剧于2011年2月25日在泰国7台播出。
孙鬼马上在脑中演绎了一遍老乌龟托梦给少爷的情形，顿时身子跟筛糠一样，抖个不止。
If you are smart enough, you will certainly think of this. To snatch the competitors' customers not only develops the customers of their own products, but also hits the sales of competitors. Such sales are perfect. Competitors' customers already have a more familiar understanding of similar products and are relatively easy to market. When robbing customers, we must pay attention to the fact that we should use legal and compliant methods to find customers reasonably.
Aban brought out historical details while telling the news. Many materials are rare and therefore precious. Regarding Sun Yat-sen's request for help from the United States and Britain before his death, he obtained first-hand information from the U.S. Consulate in Guangzhou and was the first person in the world to report the matter. When the Jinan massacre occurred, Aban was the only non-Japanese reporter on the scene, and his statement of the incident was of great historical value. Before the September 18 Incident, Aban was prompted by the Japanese in advance, traveled all over the Northeast and made the first forecast.
张琪全无恋爱经验，笨头笨脑的追求只能弄出笑话。马勇只好传授追求前妻的必杀技！张琪用马勇的方法应付晓红的考验，却微妙地令马勇仿如跟前妻重新谈一次恋爱！
而今年11月2日《大叔之爱~in the sky~》电视剧版第二季要回归啦！主演依然是田中圭、“女主角”依然由 吉田钢太郎（上司大叔）。故事舞台由不动产公司换成了航空公司，第二季中，田中饰演35岁被突然裁员、转行当空少的春田创一，依然延续废柴人设，吉田饰演为人、技术都得到同事信赖的机长黑泽武藏，基于这些背景人设，展开新的故事。千叶雄大饰演与黑泽搭档的副机师成濑龙、户次重幸饰演机修工四宫要、春田成濑四宫3人住在同一寝室。
"Er... I really can't remember the model, it's green, probably so thick." Wang Zeduan could not remember the specific model of the explosive cylinder, Just said the color and gesticulated the approximate size with his hand, Later, I looked up the information and learned that The detonators used at position 142 were all Type 68 detonators, This is also a classic explosive barrel widely used throughout the Sino-Vietnamese border war. This type of explosive cylinder is 60 centimeters long each, As long as there is a need, it can be spliced indefinitely. The charge for each section is 2.2 kg, According to Wang Zeduan's description, At that time, the explosive barrel was made up of three sections. Then the total charge is as high as 6.6 kg, However, the high explosive bomb used in the type 66 152 mm howitzer, The charge is 6 kg, In other words, The charge of these three explosive cylinders is 0.6 kg higher than that of a 152 mm grenade. This is also basically in line with his description that it is more powerful than a shell. In addition, after being inserted into the ground, the two sections of the upper half form a certain blast height from the ground, In this way, the explosive power can be better exerted virtually to cover a wider area, so it is indeed reasonable that an explosive barrel can successfully achieve the tactical purpose of successfully clearing position 142 for the second time (the first clearance is 66-type directional anti-infantry mines and 72-type pressure/tripping anti-infantry mines).
