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Before the attack occurs: take corresponding defense measures against the known attack types, such as modifying server parameters, setting proxies, etc.范文轩呵呵一笑，说道：西魏王魏豹一般，西魏国地形和封地受到限制，从中谋些小利是可以的。杨萧原是军队高级干部，转业到地方以后谢绝政府的安排，创办了一家民营企业，投入地方建设。但是冤家路窄，他于自己年轻时代的情敌――一家实力雄厚的企业集团的董事长，在争江陵小区的建设权方面发生了相当激烈的冲突。凶狠狡诈的普源，不仅采取卑鄙的手段逼垮了杨萧的公司，同时也夺走了杨萧的妻儿。几乎陷入绝境的杨甘肃省靠着军人的钢铁意志，也靠着年轻漂亮、才华横溢的工程师陶岚的全力辅助终于走出了险境，担起了开发建设江……The principle is that syn messages are first responded to syn_ack by DDOS protection system. With a specific sequence number (recorded as a cookie). The real client returns an ack and the Acknowledge number is cookie+1. The fake client will not respond. In this way, we can know that the clients corresponding to those IP are real and add the real client IP to the white list. The next access passes directly, while other forged syn messages are intercepted. The following is a schematic diagram of protection:?Is the browser event comparison relationship, is the binding object, is the function to receive the second parameter, that is, the above (document).