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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.我是朝廷你是贼，没有谈的空间。天才外科医生，却在某些方面不开窍的哥哥 学习白痴，却生活能力超强的妹妹 本剧是一部讲述完全性格相反的两个人，在生活中不断有摩擦的同时，感情越来越深的温情剧 妹妹失踪……接到这个消息的哥哥拼命的寻找妹妹的下落。 但是在寻找的过程中，却发现了妹妹在和有妇之夫交往！！ 两兄妹之间展开了暴风雪般的激烈冲突。 以这件事为中心，他们亮出了自己的人生观，对对方不依不饶。 但是，这正是因为他们互相强烈的在乎对方。 其实，他们父母早亡，是相依为命的两兄妹。 就算有时会流泪，他们仍然是互相深深牵绊的、无可替代的亲兄妹 但是就在这时，发生了威胁到两人感情，谁也没有预想到的大件事！H***u:但数量实在太多，怎么杀都杀不完，外加狼兵时不时跳出来啃一口，他们对苏杭没了祈盼，思乡之情渐浓，九州虽然鸟不生蛋，可老婆孩子毕竟在那里。秦枫看着小女娃，想起她往日的乖巧精明，常把人哄得团团转，还乐得眉开眼笑，不禁心中一酸。9-4 Number of diners: In the program written to complete Exercise 9-1, add an attribute named number_served and set its default value to 0. Create an instance named restaurant from this class; Print how many people have eaten in this restaurant, then modify this value and print it again. ?