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When the SYN gateway receives the SYN packet from the client, it directly forwards it to the server. After receiving the SYN/ACK packet from the server, the SYN gateway forwards the packet to the client and sends the ACK confirmation packet to the server in the name of the client. At this time, the server enters the connected state from the semi-connected state. When the client confirms the arrival of the packet, it forwards if there is data, otherwise it discards it. In fact, the server has a connection queue in addition to maintaining the semi-connection queue. If SYN attack occurs, the number of connection queues will increase, but the number of connections that the general server can withstand is much larger than the number of semi-connections, so this method can effectively reduce the attack on the server.The above contents are not used for commercial purposes. If intellectual property issues are involved, please contact Bo Weifeng Xiaobian (021-64471599-8017) and we will deal with them immediately.Pancake和Vee的第三次合作！拥有直升机紧急救援的大学附属医院迎来了一批实习医生。他们分别是蓝泽耕作（山下智久 饰）、白石惠（新垣结衣 饰）、绯山美帆子（户田绘里香 饰）和滕川一男（浅利阳介 饰）。直升机每天平均运送7到8个急救患者，能协助医生坐上直升飞机是对其应变能力和医术的证明，大家都跃跃欲试。Sub.accept (visitor);第四集Arrow:Season 8-Episode 8Crisis on Infinite Earths: Part Four