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两人均笑不可仰，又怕外面的人听见，只得把头埋在被子里，使劲闷笑。9. Strategic model•小望　往西邊去（中島朋子）PS: The above articles are published or reprinted by Xingtian Network. Xingtian DDOS: Create the greenest and most stable DDOS attacker! Official website:When the client SYN packet arrives at the filter gateway, the SYN agent does not forward the SYN packet, but actively replies the SYN/ACK packet to the client in the name of the server. If the client's ACK packet is received, it indicates that this is normal access. At this time, the firewall sends the ACK packet to the server and completes three handshakes. The SYN agent actually replaces the server to deal with SYN attacks. At this time, the filter gateway itself is required to have strong ability to prevent SYN attacks.In this way, it can be solved. Some people will ask why an additional layer of iframe is needed, because pages without iframe will be redirected, thus reducing the concealment of attacks. In addition, our test page does not use XMLHTTPRequest to send POST requests because there is a cross-domain problem, while form can post data across domains.　　安晴