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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.辽国萧太后虎视眈眈窥视中原，杨景奋力守卫边关遂城。宋朝皇帝整日沉迷于酒色，从不关心战事，使得遂城内缺粮、缺药，杨景等人困守城中。谁知这一下却惹怒了穆桂英，与他打了起来。杨宗保由于连日奔波早已筋疲力尽，渐渐体力不支昏倒在地，身上的精囊掉落下来。 　　穆桂英虽出身山寨却正直善良，她早就对杨家将仰慕已久，看见精囊中的急信，她得知面之人竟是杨家小将，不仅芳心暗许，决定将其救回山寨。 　　于是一个戎装女子挂帅出征、大破天门阵的故事就此展开……Simple version:英王三十多岁，身材魁梧，方面，脸部线条坚硬，浓眉、直鼻、厚唇，居然跟葫芦哥哥有些微神似。五个人的感情纠葛，东京城市下渴望爱的一个个灵魂。完治会选择热情奔放的莉香，还是传统女性的里美呢？我们不能一上来就打，要逐步一点一点打，最终在马六甲打个昏天黑地，明白了么？那不是要打上十年？就算是十年也要打，十年之内必须要打完。