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The principle is that syn messages are first responded to syn_ack by DDOS protection system. With a specific sequence number (recorded as a cookie). The real client returns an ack and the Acknowledge number is cookie+1. The fake client will not respond. In this way, we can know that the clients corresponding to those IP are real and add the real client IP to the white list. The next access passes directly, while other forged syn messages are intercepted. The following is a schematic diagram of protection:?警员徐瑜昌（张孝全 饰）为调查一宗黑枪案件，只身犯险将黑帮人物庞天南之子捉拿。时值民选的最后阶段，调查局方正北与庞天南达成交易：庞天南出人行刺候选人来换回儿子无罪开释。黄营候选人吴志雄在民调中被对手田正远远甩开，普通的宣传战已无法挽回局势，但一则更大的阴谋早已在暗中筹划……怎么样？这个主意是不是很好？我和东方不败一样千娇百媚，一样柔情似水，哦，对了，我还会绣花。同样悲伤的情形，也在清南村其他人家上演。而你，就是卖国的那位重臣，遗臭万年，今后人们会在徽州筑起一座丑陋不堪的石像，那就是你，这石像也不是为了祭奠你的，而是为了侮辱你的，无论老叟小儿，游人骚客，谁过来都要吐一口口水，撒一泡尿，骂你个祖坟冒烟。沉迷于药理研究，后来与所在研究所理念不合，自己单独开诊所的江东健（欧阳震华 饰）是个宅心仁厚，为病人着想的好人。但由于过于痴心于自己的研究，导致他迟迟未遇见合适的对象，直到看到来诊所看病的方小芳（杨怡 饰），东健对小芳可谓一见钟情，想要在合适的日子对小芳一表心意，而小芳阴差阳错的成为了东健诊所的护士。Common Commitment: Strategic planning is the result of joint discussions. Relevant responsible persons have reached a consensus and made corresponding commitments.