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The first packet discarding scheme will have a slight impact on the user experience, because discarding the first packet retransmission will increase the response time of the service. In view of this, a better TCP Proxy scheme has been developed. All SYN data messages are accepted by the cleaning equipment and processed according to the SYN Cookie scheme. The IP address that successfully established the TCP three-way handshake with the device is determined to be a legitimate user to join the white list. The device disguises the real client IP address, completes the three-way handshake with the real server, and then forwards the data. However, if there is no IP address that shakes hands with the device three times within the specified time, it is determined that the malicious IP address is blocked for a certain period of time. In addition to SYN Cookie combined with TCP Proxy, the cleaning equipment also has the ability to detect a variety of abnormal TCP flag bit packets, and identifies normal access and malicious behavior by returning unexpected responses to SYN messages to test client responses.葫芦哥哥也不会娶我的。　　在暗潮涌动的大时代下，罗宾似乎明了了自己的生存使命，不久后他拿起长弓，投入深林，开启了经久不衰的罗宾汉的传说……他打开聊天软件，准备问问其他书友，就在这时一个熟悉的书友发给他一条消息。南雀使臣怒声喝道：那就赶快放了公主。今天一上午没见他，还以为在书房看书呢。FOX宣布续订《紧急呼救：孤星9-1-1:LoneStar》第三季。