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If the connection initiator is legal, the firewall/proxy will receive the ACK, then establish a connection between itself and the server and disguise the address of the connection initiator. The firewall/proxy separates the two sides of the connection. This segmentation can resist SYN flooding attacks because the server has not accepted SYN from the attacker at all. As long as the firewall/agent implements some TCP-based defense policies, such as SYN? Cookies or SYN? Cache, he can protect all servers behind him from SYN flooding attacks.5.9. 2 Closed craniocerebral trauma with unconscious disturbance was observed on the ground for one to three months, with no clinical symptoms and normal and qualified electroencephalogram.大汉的萧丞相看着尹旭略显夸张的表情，不禁有些愕然。但是这合理吗？小说连载到现在，小鱼儿躲了铁心兰多长时间，小鱼儿还放弃了初吻的张菁，和有过亲密接触的慕容九。　　故事发生在一座机场，海关检查人员发现了一个鼻青脸肿的年轻人。年轻人声称自己是十年前失踪的孩子Adrien Legrand。对于他的父亲文森特来说，这标志着漫长噩梦的终结，终于把儿子带回了家。与此同时，一系列可怕谋杀案的发生对该地区构成了巨大压力，而汽车展厅里的模特Alexia却具有目标受害者的所有特征。陈启点开柳永源的微.博，才知道这人拍的电影原本是春节档上映，但是为了避让《笑傲江湖之东方不败》，提前了二十多天。The foundation of SYN flooding attack is the design of three-way handshake when TCP is used to establish connection. The third packet verifies that the connection initiator has the ability to accept the packet at the source IP address used in the first request, that is, its return is reachable. Figure 1 shows the process of exchanging packets at the beginning of a normal TCP connection.