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7. Enter "" to run the class file just compiled.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.The algorithm takes advantage of the retransmission characteristics of TCP/IP protocol. When the first syn packet from a certain source IP arrives, it is directly discarded and recorded in the state (quintuple). When the second syn packet from the source IP arrives, it is verified and then released.第五季主要讲述了男主角莫凡在觉醒恶魔化之后克服了恶魔系反噬，下决心帮助唐月解决宋城玄蛇危机，展现出了更强的自我控制力。在莫凡、唐月、灵灵、张小侯等人的共同努力下，主角团与善良的灵兽团结一心，并肩作战，最后成功守护了家园，展现出人与兽类超越物种的深厚友情。裴秀智在剧中饰演虽然考上了大学，但为了赚取超过1亿韩元的机会费用，退学后几乎什么兼职都做过的徐达美。 因为很早就开始了社会生活，人脉广，关系好。 不想输给嫁给财阀二世的姐姐，怀着乔布斯的梦想走上了苦难的道路。 南柱赫将担任三山科技创始人南道山。 他喜欢编程，小时候就获得了数学奥林匹克最年轻大奖，是南氏家族的期望。过了15年后的今天，却是家破人亡的状态。 和朋友们一起投身创业，创业已经2年了但是只浪费了投资资金。 这是裴秀智和南柱赫的首次组合。 就像两位演员的相遇一样，导演和作家的期待也很大。 裴秀智是继朴惠莲作家的《dream high》,《当你沉睡时》之后的第3部作品。 吴忠焕导演凭借《Doctors》,《当你沉睡时》和《德鲁纳酒店》接连的成功成为了"heat制造者"。《Freestyle妈妈》：人过中年的主妇细川房子（中山美穗 饰）在生活、职场中充满不快，某晚下班时一个奇怪男子推荐给她一支神秘口红。突然口红后，她就会以说唱的方式把心中不满一吐为快。首档10后萌娃脱口秀《童言有计》，芒果当家主持共同带领10后萌娃团发声，为妈妈和孩子搭建沟通的桥梁，传递家庭正能量。