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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.Alexi Hawley执笔﹑Liz Friedlander导演的ABC警察剧《菜鸟老警 The mingtian6.com Rookie》过去被直接预订成剧，由《灵书妙探 Castle》男主Nathan Fillion主演。Summoners operate heroes of their choice, follow the movement of sandstorms, fight monsters and upgrade in changing battle areas, and can pick up skills/equipment to fight.该片改编自查克·法尔所著同名小说，讲述了在2050年，地球正逐步走向毁灭，拯救人类行动的高级指挥官凯特和她的队员们在火星探险的故事。这样的官司，若是打赢了，定能名动天下，还显得他们不畏权贵、正气凛然。After the Provincial Games, some outstanding athletes have been selected by the provincial team and the national team. Qingdao Weightlifting Team has welcomed a group of new players. Next, there are tasks such as the Youth Games and the Provincial Championship waiting for them. They cannot relax their steps. They still have to repeat the task of lifting two or three tons a day to train and strive for better results. "Everything is quite good now. We just hope that the society can have a correct understanding of weightlifting, so that we will not have so many obstacles in selecting and training talents in the future." At the end of the interview, Liu Eryong said so.