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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.Article 9 Narrow waterwaysThree, commonly used ways of use生于司法界世家的方以因（黄智雯饰），拜律政界红人欧阳一波（李国麟饰） 为师，成绩出众，但学满师后却倒戈相向转做执业大律师，经常与师傅在庭上针锋相对。以因一直隐瞒自己有多重人格问题，次人格是狂野玩家菠萝椰奶（黄智雯饰），好勇斗狠、另一个则是愁擘擘（黄智雯饰），为人怕事悲观，愁眉苦脸，而得知此秘密的利东佳（袁伟豪饰） 趁势要胁以因聘他为实习生，以因为保自己能顺利下嫁城中钻石王老五纪骁勇（陈智燊饰)，无奈答应，两人遂展开一段别开生面的经历，因为人格会突然转换，经常令以因在庭上丑态百出，闹出不少笑料；而惟一知道以因病源只有母亲方华绮思（黄淑仪饰），可惜，绮思对往事绝口不提，期间东佳更与椰奶和擘擘渐成好友，以因为除后患，决心令她们一同消失……杰克（爱德华•伯恩斯 Edward Burns 饰）是一个千术高明的骗子，加上他的英俊长相，行骗屡获成功。这天，杰克和他的朋友打起了会计师温斯顿（达斯汀•霍夫曼 Dustin Hoffman 饰）的主意，他们伪装成一个艺术团体，轻而易举地从温斯顿那里骗来了500万美金。岂料杰克得手后，也引来了各种狐朋狗友来分一杯羹，那500万美金很快就都被瓜分干净。她的目标是，七濑俊一，一个和她在一个班上的男生。