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Recently, security researcher MathyVanhoef found that there are logical defects in WPA2 protocol layer. Almost all Wi-Fi-supporting devices (including but not limited to Android, Linux, Apple, Windows, OpenBSD, MediaTek, Linksys) are threatened, and the data transmitted by them are at risk of being sniffed and tampered with. Attackers can obtain data information in WiFi network, such as credit cards, emails, account numbers, photos, etc., which is extremely harmful.Industrial Revolution 4.0-Intelligent Era: In the next 10 years, it will enter the Industrial 4.0 Era and realize the transformation from "automation" to "intelligence". Through CPS (Cyber-Physical System) network, real-time connection, mutual identification and effective communication among people, equipment and products are realized, and "personalized" customized commodities are tailored for consumers.7. Decorator)故事发生在80年代，那是一段令人留恋的美好时光—人们单纯、乐观、向上，社会上充满了新生事物、孕育着各色理想。江路（蒋雯丽饰演）是杂技团的化妆师，漂亮能干，人见人爱。令人迷惑的是，三十六岁仍孑然一身，成为人们始终无法破译的一道不解之谜……宋宇生（孙淳饰演）是出版社的摄影师，在圈子里颇具声望。六年前妻子车祸身亡，虽然前丈母娘不停的给他介绍对象，但他始终提不起兴致……在姐姐的压力和催促下，江路开始与一个美籍华人谈婚论嫁。在大院的公用电话处，她偶遇宋宇生，二人一见如故，沉寂已久的激情被瞬间点燃，熊熊燃烧！江路的眉开眼笑，让姐姐江沛嗅出了异味，她对妹妹动之以情晓之以理，却眼见得江路越陷越深，江沛被迫使出了最后的“杀手锏”……宋宇生的“失魂落魄”，更引起了前丈母娘钱淑华的怀疑和不安，她派遣外孙女盯梢、调动居委会干部查岗，直至深夜出马亲自“捉奸”……双方亲人的横加阻挠，尤其是钱淑华不择手段的频频打击，让江路陷入了绝望中。正当她准备放弃宋宇生的时候，爱情的力量竟让她做出了不计后果的选择——结婚！爱情是两只限今晚闭馆的最后一夜放映，3名年轻人穿越到电影的世界的幻想。时隔20年，毅然前往故乡尾道进行拍摄。以压倒性的消息赠送的大林宣彦监督最新作！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).