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Are all security features identifiedIn 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).电影讲述了几个初涉社会的大学生窘迫、挫败的人生经历，他们中的美女校花为追求歌星之路被富人包养；富二代公子哥因家庭破产自谋生路；校园学霸只能从事送外卖的苦差事……昔日的天之骄子皆成社会底层的草根，他们在冷漠、残酷的现实中不甘沉沦，抚平伤痛，走上艰辛崎岖的创业之路。新任户部侍郎白凡带着管家和下人也在场。这是抗日战场上关于英雄连队的故事。河北沧州剃头匠武十三因杀妻之仇而誓要当兵杀日本鬼子。投军途中误入战场，被八路军救后参军入伍。五一大扫荡开始，武十三所部与大部队失去联系，他们边打边退，突出重围后，武十三将汇集起来的人马整编为一个连，因大家来自五个不同的连，故起名“新五连”。连队在武十三的带领下坚持抗敌战争，巧过封锁线、阻击扫荡、打造武器、训练队伍、使得这支部队渐渐壮大，武十三也从欲报私仇的平民百姓成长为以民族大义为重的铁骨军人。随着他们的强大，鬼子更加紧追不舍。为消灭新五连，敌人采取了各种手段，使五连多次陷入绝境，不断有人牺牲，武十三等人凭借智慧屡次脱险。在炮火的洗礼下，五连的战士们结下了亲如兄弟的生死友谊。最终，五连与总部会师，武十三等人归建，继续迎接残酷的战争。血性青年周致斌，与戏班台柱子丹凤在万年台上飞刀定情，却不想父亲周文轩也倾慕上了丹凤的豪气与侠义。国民政府派来的新任县长的一纸禁烟令，将两河口卷入了争夺烟道的血雨腥风。周致斌与镇长之子张济邦、两河孤儿黄登宝结为兄弟，誓死保卫两河口。三人为救丹凤，几次勇闯匪窝，却被烟道大土匪金刚钻活捉。阴差阳错间，黄登宝投奔金刚钻码头，成为了他手下的一名得力悍将。张济邦遭恶人陷害，被开明的县长马玉之暗地里送到了省城的军校去读书。而周致斌则为救丹凤，被金刚钻打成瘸子。丹凤为保周致斌不死，只得答应金刚钻嫁给周文轩做填房Take out the body and look at it. One thing must be said is that it is too long. The general soup pot in the home is definitely not applicable. If you want to use it, you need to buy a deep soup pot or a box with large capacity. I put it sideways all the way, which did not affect my use.