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故事发生在被天空之壁分为三区块的《幪面超人BUILD》的世界，竟然出现了《幪面超人EX-AID》世界的敌人怪人崩源体：为何不该出现在这的敌人会来到这世界？面对神秘敌人而毫无应对方法的战兔，一个身体半边被金属覆盖的神神秘男人出现在他眼前。唐伯虎只好捻起地下的一只蟑螂，用更夸张，更悲惨的表情，哀嚎起来：小强，你不能死啊。Facing TCP's three-way handshake protocol, how should attackers launch attacks? The attacker first intentionally initiated a handshake packet. After receiving it, the server puts it into the waiting queue and returns an acknowledgement. Secondly, the attacker will no longer send the third acknowledgement packet, thus the server will make multiple retransmissions (the Linux system configures the number of retransmissions through tcp_synack_retries), consuming a lot of extra overhead, and the waiting queue will be occupied, even the waiting queue will be full, eventually causing the server to be unable to receive the client's request. This is the attack.青木用手指敲了敲桌沿，沉吟道：不成，我得想个法子，去西南瞧瞧才能放心。