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In order to improve the sending efficiency and generate more SYN waiting queues at the server, when the attack program fills the header, neither the IP header nor the TCP header is filled with optional fields, so the length of the IP header is exactly 20 bytes, and the TCP header is also 20 bytes, totaling 40 bytes.(3) The subReactor thread pool allocates a subReactor thread to the SocketChannel, i.e. Registers the READ event concerned by the SocketChannel and the corresponding READ event handler into the subReactor thread. Of course, you also register WRITE events and WRITE event handlers into the subReactor thread to complete I/O writes. Each Reactor thread in the Reactor thread pool has its own Selector, thread, and distribution loop logic.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.黄瓜耳里听着他说话，眼睛看着纸上的描述，和黄豆飞快地交换了下目光，随即将字纸递还给他。宇宙历元年，地球上所有的人们都在大肆庆祝，平时热闹非凡的北武市海滩显得空空荡荡，只有一个少年——周毅火孤单的坐在海滩上，他正通过一种机器装置，和他的海豚朋友KIMMY聊天，向它诉苦，因为自己成绩下降不少,物理考试不及格，父母不带他去参加盛大的庆祝活动。就在这时，他被几道剧烈的光亮吸引，好奇心下，前去寻找。他发现光亮是从自己家邻居楠博士的房间中传出的，于是躲在窗外一探究竟。这里是被人称为疯狂科学家的楠博士，他正在进行一项神秘的实验。博士手中的一张神秘卡片引起了周毅火的注意，这张卡片看上去非常古老，博士对卡片也是小心翼翼格外重视，博士经过精确的计算，通过一种装置给卡片分别注入了六种颜色的能量，奇怪的事情发生了，卡片突然发生巨变，卡片被六种能量激活，打开了一道空间之门，将楠博士吸了进去，消失的无影无踪……Run the script to see if it has any different effects.一名处于上升期的政客性生活被偷拍，视频的泄露让她的政途遭受威胁。