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That is to say, a total of false syn messages will occupy the TCP preparation queue for 63s, while the semi-connected queue defaults to 1024, which is different by system default and can be viewed by cat/proc/sys/net/ipv4/tcp_max_syn_backlog c. That is to say, sending 200 fake syn packets per second without any protection is enough to burst the semi-connection queue, thus preventing the real connection from being established and responding to normal requests. The end result is that the server has no time to ignore the normal connection request-denial of service.该剧讲述的是虚构的三个国家Tanta、Panturath、Kasik，Tanta的国王、公主与王子之间的情感故事。下更预计晚八点。Color deepening mode. The color of the bottom layer is darken, which is somewhat similar to the bottom layer of the positive film stack, but the difference is that it will increase the contrast of the bottom layer according to the color of the superimposed pixels. Mixing with white has no effect.这么一块元宝，相当于沥海村普通三口之家两三年的总收入，而扬长帆面前有31块。能力和号召力都极强的路桥川幸运的当上了班长，哪知道这个沉重的头衔给路桥川带来了荣耀，却也带来了数不清的麻烦和巨大的压力。在屡屡的失败面前，路桥川打起了退堂鼓，然而，同学和朋友们的信任让路桥川再度振作了起来，一转眼大一就要接近尾声。How can the average person afford that hard disk? The task of deliberate practice should be moderately difficult, feedback can be received, and the practice should be repeated enough times, so that the learner can correct his own mistakes.