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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:?First of all, the difference between "panel attack power" and "basic attack power":The bright prospect of "a prosperous, democratic, civilized, harmonious and beautiful socialist modern power" described in the 19th National Congress Report is a new goal we will accomplish in the middle of this century and a enrichment and development of our goals for the second century. It reflects the requirements of historical progress, the happiness of the people and the sustainable development of the nation. From the 19th to 20th National Congress of the Communist Party of China, it coincides with the historical juncture of the "two hundred years" goal. We should not only build a well-off society in an all-round way and achieve the goal of the first century, but also take advantage of the situation to embark on a new journey of building a modern socialist country in an all-round way and march towards the goal of the second century. CCTV News (Focus Interview): After the centralized online shopping activities made by individuals, people have to face piles of packaged garbage. While you unpacked layer after layer of express packages and happily inspected new clothes and articles, have you counted how many cardboard boxes you have to throw away? How many packs of stuffing? How many plastic bags? The development of e-commerce and express logistics enables us to meet the shopping demand without leaving our homes, but at the same time, a large number of waste packages have also been generated. Because these packages have not been well recycled, most of them have been directly turned into garbage, which is not only wasted, but also brings a huge burden to garbage disposal.产生的影响将会是非常巨大的，甚至直接关心到越国将来的国策。民国时期，在新文化的冲击影响下，服饰文化进入了一个繁荣、多元化的时代，各式各样的美服争奇斗艳，百花齐放。同时，彩云镇的云衣坊与秦府布庄也正上演着激烈的竞争。 而性格活泼、从小在大杂院长大的米酒儿则是为了生活而劫富济贫的“流水侠”。原本并无关系的两个人，因为酒儿为了躲避官府满城通缉，遇见了与自己长相一样的鹿以菱，阴差阳错之下，酒儿以鹿以菱的身份欲混入云衣坊，也为此闹出许多乌龙笑话。而骆胤燃对这个性情大变的“鹿以菱”也一路从怀疑、试探、防备走向欣赏和吸引。同时，曾与酒儿在彩云镇乌龙相识的上海商会之子裴卓（范晓东饰）前来云衣坊和秦府考察，在帮助酒儿躲过骆胤燃试探的同时也给逐渐升温的“燃酒”恋情带来了不小的考验。