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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.　　原来，乔家有惊天秘密　　他们拥有自己的信仰，坚持着它，忠实着它。他们在智力、信念甚至人格上都难分伯仲，这是一场强者间的斗争……最终正义取胜！两位优秀的情报人员终于可以在古稀之年对月品茗，相视一笑。电视连续剧《天地情缘》，以回归前的香港为背景，讲述了大陆的三个姑娘孟晶晶，邱春慧和李梅来到香港后的经历，更通过她们各自坎坷、曲折，甚至是充满传奇色的遭遇，构成了一幅具有强烈戏剧冲突的人生画卷，生动地表现了香港和祖国内地由于百年分离所形成的社会矛盾，文化差异和人性冲突还通过三位内地姑娘与香港阔少黎少雄，北京青年田兵，香港平民黄德安，许世发等人之间的感情纠葛，反映了炎黄子孙血脉相连的情缘就像天地相依一样是无法割断的。　　Nick Hornby继续负责剧本，Stephen Frears回归担任导演。Brendan Gleeson、Patricia Clarkson和Esco Jouléy主演。