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那是。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.Netflix宣布一口气续订《女子监狱》第5﹑6﹑7季。忽然想起什么来，黎章问道：你爹是读书人，那身上可有功名？周姑娘神色就黯淡下来，低声道：我爹不曾去考功名。越国总是能在很快的时间内得知北方诸侯们的动向。哦？海瑞微微一惊，何等罪名？私自经商。杨蓉并没有收爱丽丝为徒，而是替她的父亲收徒，爱丽丝现在算是她的师妹。