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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.翘儿出房便跑到杨长帆身旁，这次又聊的什么？听你的话，翻船了。前国民党高级将领史伯言走下飞机的舷梯，终于在几十年后回到了祖国大陆探亲。在女儿女婿的陪同下，他要在南京寻找自己的母亲。无意之中，史伯言与一位中国人民解放军的现役老军人邂逅，原来他正是史伯言同村同族的兄弟史海良。他们一起长大、参军、打日本鬼子，也曾在解放战争里多次交手。史伯言心绪万千，没有勇气去认史海良。后来，史伯言终于找到了自己的母亲，原来几十年来，一直是史海良在照顾他的母亲。在中秋之夜，大家终于相认了，两个亲密地走到一起。In the "Parameters" tab of the "Block Writing Palette", click "Flip Parameters" again, AutoCAD? The command window at the bottom prompts "Specify parameter position or [name (N)/label (L)/description (D)/palette (P)]", captures and clicks on the corner below the triangle on the graphic; The command window then prompts "Specify the endpoint of the projection line" and drags the mouse vertically for a certain distance before clicking the mouse. The command window prompts "Specify Tag Position" and clicks again nearby.小葱点头。安娜（克里斯蒂娜•里奇 Christina Ricci 饰）是一次车祸的幸存者，然而她惊讶的发现自己已经被判定了死亡。证据是她的葬礼已经在准备中，负责人正是葬礼主管艾略特（连姆•尼森 Liam Neeson 饰）。安娜对此既不解又恐惧。因为她很清楚，葬礼的终点就是入棺活埋。她对艾略特现身，希望后者坚持自己还活着的真相。两个人在封闭的停尸间进行着辩论，艾略特坚持履行自己的职责，并对安娜解释她到“来世”的种种缘由。而安娜面对不见底的黑暗，内心无比悲凉。然而，艾略特并不认同安娜的说法。他坚持自己是因为通灵才能辨识安娜的游魂。只有一个人还坚信安娜活着，那就是她的男友保罗（贾斯汀•朗 Justin Long 饰）。他并不认同艾略特的说法，坚持调查安娜的死因，慢慢地，他接近了真相……