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Finally, a summary chart is attached:之前的计谋，不妨再扩大一下影响。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.Hive Input and Output Library Hive-IO-Experimental周菡挺直了身子，轻声道：自然有所图。再说，正殿那边依旧人声喧哗，他听了心里十分难受。Bring the handling materials and expenses (cash only) to Jiangsu CA outlets for handling (see point 3 for details). No invoice will be issued on site, and the electronic invoice will be sent to the mailbox in about one month.