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The attacker first completes the three-way handshake to establish the connection, but in the last ACK reply of the three-way handshake, the TCP window size is set to 0, and then a data request is made. When the attack target sends the request result to the attacker, it stops the data transmission when it finds that the TCP window size is 0, and sends out a TCP window detection packet to ask the attacker if the TCP window has been updated. Since the attacker will not update the window size, the attack target will always maintain the TCP connection and wait for the data to be sent, and continuously carry out TCP window size detection. When the number of controlled hosts in the botnet is large, Target's connection table will gradually be exhausted, resulting in denial of service.Step 4: The program executes gadget 1. After the instructions in this gadget cause the data in the stack to leave the stack in turn and save it in other general-purpose registers other than the esp register, the program jumps to gadget 2.DDos attacks are often used in many ways, such as SYN Flood, DNS query, ICMP Flood, UDP Flood, and so on. This paper describes the common attack methods from the perspective of DDOS attack resourcesEnumo.nextElement (). Update ();德国导演法提赫·阿金将拍摄一部犯罪题材新片。影片改编自海因茨·施特龙克的小说《金手套》，故事源自真实事件。1970年至1975年，一个名叫弗里茨·洪卡的心理变态凶犯在汉堡红灯区谋杀了四名女子，他挑选“猎物”的地点是家名为“金手套”的酒吧。Originated in the Swiss Alps, it is a winter sport that takes wooden or metal skateboards to slide and turn at high speed on special ice and snow routes. It is divided into two types: sled with rudder and sled without rudder.黎指挥使是女人。