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(2) Ships whose manoeuvring ability is limited;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.……《笑傲江湖》电影开始拍摄，并没有太影响到陈启的生活。学校里形形色色的学生都要面对他们各自的成长烦恼，Lindsay每日要面对家庭和学校的双重管教，Sam每日要忍受学校小流氓的滋扰。这是一个真实的故事，一个关于成长的故事，叛逆的怪胎和怪异的书呆，他们的生活在每一个高中校园里上演，折射出每一个人的青春。看来树大招风，名人效应的影响是很难避免的。那我不叫了。