When an attacker sends an http post request, he sets the Content-Length to a large value in the request header and sends the http body to the web server at a very slow speed, byte by byte. The web server always needs to maintain the connection with the client and wait for the data transmission to end. Because the content-length is set to a large value and the http body transmission speed is very slow, attackers can occupy this connection for a long time.
12. Os.system ()--Execute shell commands. Example:
被车撞到的男人李文基从医院醒来后失去记忆，来到警察局确认自己的身份，旁边出现一位美女告诉他叫李文基，32岁，没有家人，家庭住址等，跟警察的介绍一模一样。被吓到的李文基回到家中再次见到了这位美女，才知道这位美女是个女鬼。在和可爱的女鬼妍花的交往过程中李文基渐渐想起妍花曾救过落水的自己，想起自己对妍花的爱，想起妍花死去的一些片段。凭借这些片段，李文基想为妍花抓到刺死她的人，于是与警察配合一起抓住了自己在孤儿院一起长大的好兄弟。但是原本他认为的凶手却反过来说李文基自己才是凶手。警察抓了兄弟俩，在重现案发现场时，李文基想起了一切，想起了妍花约他去自己家庆祝生日，想起了弟弟找他帮忙却是为了偷窃，想起了他们偷得是妍花家，想起了妍花回来后被弟弟劫持，想起了他为了阻止弟弟却误伤了妍花。想起一切的李文基痛苦不堪。在监狱里女鬼妍花来看李文基，怨他不该跟他弟弟去，怨他为什么不先来找自己，却也希望他以后好好的生活。李文基一直称自己看到了妍花，但那是真的见到了鬼，还是只是因为太爱妍花而产生的幻觉……虽然失去了
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).
一個行李箱載得住一個人的所有嗎？從未離開過家鄉的Sue，即將遠到芬蘭升學。獎學金已預備，決心也已下定，問題是一直被蒙在鼓裡爸爸現在對她不瞅不睬。人生第一次執行李便已是離鄉別井，Sue完全不知道該怎麼辦：該帶甚麼？不該帶甚麼？會不會帶太多？還是太少？於是，她找來好友Belle，兩個少女一起進行這小小計劃。人生即將迎來天翻地覆的轉變，Sue除了興奮，還有茫然。而大概終身將會留在這個小村莊的Belle，則騎著電單車在田原間盡情渾灑青春，迎接不可知的未來。一個行李箱，能帶走甚麼？留下的又會是甚麼？導演KongdejJaturanrasamee擅長刻劃青春躁動，探索初熟少女心事。
She is willing to take care of you all the time when you are ill and imbue you with daily necessities of life.
天地伊始，万象皆新，巫族所镇守的九转玲珑石，集天地之气运，能颠倒日夜乾坤，其中的月华石更是有活生魂，药死人的奇效。
说实在话，《倚天屠龙记》目前的情节，云峰还是蛮喜欢的，其实张翠山和殷素素就一直待在冰火岛，也挺好的。
Well, we've reviewed the concept of rules, And it has been understood that, A rule consists roughly of two logical units, Match conditions and actions, It is useless to say so much, Let's define a rule by hand. Here, we still take the INPUT chain in the filter table as an example, because the filter table is responsible for the "filtering" function, and if all messages sent to the local machine need to be filtered, they will first pass through the INPUT chain (PREROUTING chain has no filtering function), which is very similar to the "entry" scenario we refer to. Therefore, using the INPUT chain in the filter table as an example is helpful for us to understand.
4. Instructor's License (applicable to flight instructors)
"Genius" is the product of training//007
纯朴的花田彰化，还是学生的蜜蜜，漂亮美丽、永远带著微笑。偷偷暗恋著她的书呆子李劲阳，纵使拥有了祖业雄厚的葡萄园，却只敢偷偷摸摸看著、画著，在心中闪耀光亮的玫瑰公主。书呆子不像徐烨，有勇气不顾家中反对就是要和蜜蜜在一起，还私定了终身，交换著彼此的誓言。 蜜蜜的父亲猝死，家中经济陷入了危机，还好徐烨挺身而出，扛下所有。
一阵忙乱过后，高凡走了出来。
一道急促的声音传来。
2. Udp flood attack
黄月海跳出来攻击《白发魔女传》，武界出版社的沉默，现在突然爆发出来的舆论……沈梦海猛然一惊，身体发冷，原来这一切武界出版社早有预谋，他们目的本来就是侠客文化，可笑自己像傻子一样自鸣得意到现在。
According to the memory of Zhang Xiaobo, a soldier who personally participated in the battle that year:
