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板栗侧头对妹妹低声笑道：少吃些"Charlie, the task of decorating the Christmas tree is finished. Let's sit down and have a rest. Can Grandma tell you a story?" As he said this, he took Charlie to a sofa chair beside the Christmas tree and sat down.家境优越的林珊性格叛逆，和父亲关系紧张，大学刚毕业就因不满父亲安排离家出走。在寻找住处的时候遇到了刚刚分手的设计师张思雅。两个性格迥异，有着不同背景的女生为了分担房租住在了一起。在合租的生活当中，感情也一直在发生着微妙的变化……林聪盯着他，意味深长地笑道：比如说：水性特别好，或者长期在山林中生活，善于翻山越岭，又或者跑得特别快，或者有些武功底子等等……玄龟当即大喜，乐呵呵地说道：军爷，我老龟水性最好了，能潜在水底半个时辰哩……他弟弟麻虾跟着道：要是含一根芦苇管子，别说呆半个时辰了，就是在水底下过日子都不成问题。State mode-Allows an object to automatically change its behavior when its internal state changes, and the object looks like it has changed its class. The specific structure diagram is as follows:The SYN-Flood attack is currently the most common DDoS attack on the network, It is also the most classic denial of service attack. It takes advantage of a defect in the implementation of TCP protocol. By sending a large number of attack messages with forged source addresses to the ports where the network service is located, it may cause the half-open connection queue in the target server to be full, thus preventing other legitimate users from accessing. This kind of attack was discovered as early as 1996, but it still shows great vitality. Many operating systems, even firewalls and routers, cannot effectively defend against this kind of attack, and it is very difficult to trace it because it can easily forge the source address. Its packet characteristics are usually that the source sends a large number of SYN packets and lacks the last handshake ACK reply of the three handshakes.Pointcut)