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6. When a ship less than 12m in length is stranded, it is not required to display the lights or types specified in Items (1) and (2) of Paragraph 4 of this Article.　　时光之轮开始倒转，镜头回到1973年的格林威治村，13岁的汤姆和每个处于这个年龄段的青涩少年一样，正经历着从男孩到男人的尴尬转变。都说父母是孩子的第一任老师，可是汤姆今日是闹着玩，他就算说自己得了相思病。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.These are the problems of my work and my own thoughts in my heart. Perhaps the problems I raised also have my own deficiencies in understanding, but I have written down my thoughts truthfully. I hope that any department of the company will not always consider problems from its own standpoint when working in the future, and will think more from other angles.《古剑奇谭二》是改编自单机游戏《古剑奇谭二：永夜初晗凝碧天》的古装仙侠剧,该剧讲述了少年乐无异因机缘离家踏上偃术修行之旅，旅程中邂逅了百草谷天罡战士闻人羽、太华山弟子夏夷则、身世神秘的少女阿阮等伙伴而展开一段传奇的故事。The first handshake: when establishing the connection, the client sends syn packet (syn=j) to the server and enters the SYN_SEND state, waiting for the server to confirm;