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The above example shows that the rule with sequence number 3 in the INPUT chain in the filter table is deleted.童侍郎忙亲自带他们往后院去，殷切地说暂时未将陈离送进牢房，正等着他们来呢。呼……徐文长摇首长叹，只可惜，大多数军士没有船主这样的理智，为了一时之快，死也无妨。说完，对秦瀚一挥手，使了个眼色。Docker is an open source application container engine, which allows developers to package their applications and dependency packages into a portable container and then publish them to any popular Linux machine. Virtualization can also be realized. Containers use sandbox mechanism completely and there will be no interface between them.这是一个女人奋斗的传奇，这是一个屡败屡战直到最终成功的经营传奇，经营的不单是子君的酒店，而是她的人生。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.