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子不语怪力乱神  任何奇案背后都隐藏着一套“拼图” 破案如解谜　　自闭症患者 阿斯特丽德 vs 热血女警探 拉斐尔 因缘际会组成一对神探搭档 屡破奇案~　　一桩桩案件背后同样是一张张人性的面孔　　二人的关系就宛如命定之钥和锁孔  很期待第二季二人之间的感情发展~Received syn message? ? -> Simply compare whether the IP exists in the whitelist: if it exists, forward it to the back end, otherwise proceed to Step 2然后学会小鱼儿所练的《五绝神功》和燕南天的《神剑诀》。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).一千年后，自称“天才美少女魔导士”莉娜·因巴斯诞生了。故事也从她在森林里遭遇盗贼，得到流浪佣兵高里·卡布列夫的相助开始。从此他自称为莉娜的监护人成为共同旅行的伙伴。而两人的命运又和魔王有着不可分割的关联.....Simple Network Management Protocol (SNMP) is composed of a set of network management standards, including an application layer protocol, a database schema and a set of resource objects. The protocol can support a network management system to monitor whether the devices connected to the network have any management concerns.