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Reset authentication takes advantage of the reliability of TCP protocol, and DDOS protection system responds to syn first. When the protective device receives syn, it responds to syn_ack and sets the Acknowledge number to a specific value (recorded as a cookie). When the real client receives this message and finds that the acknowledgement number is incorrect, it will send a reset message with a sequence number of cookie + 1. The source of the forgery will not have any response. In this way, we can add the real client IP to the white list. ?该剧讲述讲述了抗日战争时期，国共两对情报人员阴错阳差接错了头，无奈只好将错就错互换搭档继续执行任务的故事。抗战八年，两对“国共假夫妻”既斗智斗勇又团结合作，既相互猜忌又彼此信任，相互扶持出生入死。　　国家安全局特种部队培训出的特工小组女子特警队训练出的一批超级女警，小颜就是其实的一个。为了捉拿罪犯，她不惜潜入黑帮成为卧底，靠着拳头取得了黑道老大的信任……PS: Many forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated. Maybe Microsoft will launch a new SOA implementation scheme at that time. Wouldn't it be a waste of time to learn in depth, so they feel that there is no need to learn in depth and just know how to use them. I had the same feeling about this problem before, but now I think that although WCF technology may be replaced, the key to understanding a technology in depth is not to know some more advanced API calls, but to understand its implementation mechanism and way of thinking. Even if the latter technology is replaced, the mechanism behind it is definitely similar. Therefore, if you have a thorough understanding of a technology, you will feel familiar with the new technology and relaxed about it. In addition, after you have a thorough understanding of a technology, you dare to say that you have mastered the technology well during the interview, instead of saying that you use it a lot at ordinary times. Once you ask deeply, you do not know the implementation principle behind it. This is also why I want to write WCF series. I hope this opinion is helpful to some beginners.甄胜利（李文海饰）是一个无可挑剔的好好先生。他是上司眼中的好下属、后辈眼中的好前辈，他还是个孝顺的儿子、尽责的父亲，更重要的是他是个忠诚的丈夫。他与周惠靖（爵西饰）结婚30年，正如他处世待人，‘尽忠职守’从未行差踏错。今天，正是他工作拼搏30年后的退休之日。在这个风和日丽的早上，贤惠的妻子像往常一样为他打点了一切，恭敬地把他送出了家门。一切是那么的和谐美好，公司也隆重地为他办了个送别会。一个中年男人的一生责任想必就此圆满结束，胜利也为自己感到自豪，回程中想着该如何打发退休后的生活…岂料却发生了一连串令他措手不及的事情。接下来的退休生活，胜利不再是享乐无忧。琐碎家务、三个问题多多的儿子、一个经常找碴的麻烦老爸，从此他陷入了一个不一样的生活……长子甄健一（翁清海饰），终日浑浑噩噩，不务正业，怠惰，粗枝大叶，对待事情有始无终，家人眼中的一事无成。前妻王淑娴（秦雯彬饰）带着独子小比在外自力更生，健一向来不闻不问。他吊儿郎当的性格后来反而吸引了-方文。方文喜欢健一的另一面：大男人般的逗趣、小男人般急症室高级医生黎国柱（林保怡 饰）风流不羁，一次偶然发现肿瘤科医生满月（苏永康 饰）的姐姐是律师新月（陈慧珊 饰）。原来国柱曾经有负于她。当两人再次重逢，新月发现自己对国柱余情未了。