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The foundation of SYN flooding attack is the design of three-way handshake when TCP is used to establish connection. The third packet verifies that the connection initiator has the ability to accept the packet at the source IP address used in the first request, that is, its return is reachable. Figure 1 shows the process of exchanging packets at the beginning of a normal TCP connection.For example, when our young lady did not have these two characteristics,一名记者想以自己的文笔缅怀他去世的父亲。为寻找写作灵感，他开始了一段为期四天的列车之列。在这段旅程中，他遇到了形形色色的人，并借此机会重拾旧爱。明天启七年，北镇抚司锦衣卫沈炼在追查案件中身陷阴谋，为了证明清白，沈炼与少女北斋，同僚裴纶协力查明真相。Return arrayInt;讲述了小时候积极阳光的女主角苏怡文(刘芸饰)长大之后变得消极自卑，男主角彭曦哲(宋铭宇饰)暗暗发誓想要帮助她找回曾经的自己，苏怡文在彭曦哲的爱意中慢慢觉醒并最终找回自我的故事。There is another example of students deliberately practicing learning English. Although the methods are different, the results are indeed extremely good.