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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.讲述了章台市一起千万元公款挪用大案侦破过程。表现了新任代理市长的励精图治、市委书记的沉着冷静，使得副省长的问题终于被揭开。作品主题积极向上，宣扬了人间正气，抒发了积极向上的乐观精神。清气澄余滓，杳然天界高。血色深沉的思想主题，豪放苍劲的艺术表现，撞响了反腐肃贪的警世洪钟。In the case of a reflection attack, An attacker uses a controlled host to send a large number of packets, The special feature of these packets is that the destination IP address points to the server, router and other devices as the reflector, while the source IP address is forged as the IP address of the target. When the reflector receives the packet, it will think that the packet is a request sent by the attacked bird, so it will send the corresponding data to the target.Death Designed for the LivingI. Factors to be Considered in Determining Minimum Wage Standard