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天火传说主要讲述了两位考古专家来到新疆北庭，寻找“天火”，以改变世界为人类造福，却遭一个想拥有世界上最大的权力与财富的野心企业家的阻扰。为得四块晶石，双方以及四灵战士展开了惊险激烈的智勇斗争，故事曲折惊险，扣人心悬。谁都看得出来，霸王这会子暴怒不已。In addition to solving the port problem of A, the serial number problem also needs to be paid attention to. The serial number corresponds to the sliding window. The fake TCP packet needs to be filled with the serial number. If the value of the serial number is not in the sliding window of B when it is sent to B before A, B will actively discard it. So we need to find the serial number that can fall into the sliding window between AB at that time. This can be solved violently, because the length of a sequence is 32 bits, and the value range is 0-4294967296. If the window size is like 65535 under Windows I caught in the above figure, I only need to divide, and I know that at most I only need to send 65537 (4294967296/65535=65537) packets to have a sequence number fall into the sliding window. The desired value can be calculated quickly by exhaustion on multiple control hosts.This post is also for everyone to challenge more difficult games in the future and make a little contribution.Output: this is mailsender!等大哥杀了阿里，再来救他也是一样的。到底是亲爹。