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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.曹邦辅用更低沉的声音说道，赵御史毕竟未来前线，也从未见过拼杀，现在，绝不是追击的时候。　　返港后，金刚寻求侦探光头佬（麦嘉 饰）的帮助，谁知黑帮尾随而至，虏走光头佬的妻子贺警司（张艾嘉 饰）作人质。为救爱妻，光头佬带着儿子，协同金刚赶至纽西兰……Public class Test {在第一季爆发性事件之后，本季的晨间秀团队从亚历克斯（詹妮弗·安妮斯顿饰）和布拉德利（里斯·威瑟斯彭饰）动作的废墟中走出来，进入了一个新的UBA和一个不断变化的世界，身份就是一切，我们现在的身份和我们真正的身份之间的鸿沟开始发挥作用。也不能欺负女人啊，还是这么美的女人。Books that open the door to life change