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The green arrow at the bottom indicates that it can be passed. Some ticket gates are two-way. When someone comes towards him, the green arrow will turn into a red fork.你打开爱丽丝的微.博，就知道了。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.要是你们也每天晚上练习一阵，什么学不好。闪身避开一脚，一柄长剑朝腰间而来，水袋正悬于那处。　　没有破绽的犯罪手法，查无凶手的连续杀人案…！　　一桩桩悬案迫使警方与罪犯不得不携手合作，深入命案现场与凶手博弈对决，为死者伸张正义。双雄联手出击的强强对决，却让这场魔鬼交易暗潮汹涌，即将引发另一波更大的致命危机！嗯，不冷不热刚刚好。