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Excellence is not a gift, but a skill. You and I can master this skill.· ·可见是真的当她仙女一样，因而欢喜得心花怒放。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.一个神经质有躁郁症的CIA女特工凯莉，一个被基地组织囚禁8年后被解救回美国但疑似已被策反的大兵布洛迪，两个性格不讨好、样子不偶像的角色，成为艾美奖、金球奖最佳剧集《国土安全》的灵魂人物。在第一季中，所有人都觉得这场猫捉老鼠的游戏中，凯莉已经陷入万劫不复之地。没想到第二季播完之后，“没啥理由能活下去”的人变成了布洛迪。第一季疑云丛生，第二季变本加厉，每隔两三集都会有个剧情大突破。1? Basic Vulnerability