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Probability Theory: This one is not specially recommended, because it is not very good at learning, so it is misleading not to make recommendations. No matter what books you read, you just need to master the key knowledge. Can't ask Bayes when the time comes, you don't even know how to push it = =!Non-state enterprises:BeijingThe SYN-Flood attack is currently the most common DDoS attack on the network, It is also the most classic denial of service attack. It takes advantage of a defect in the implementation of TCP protocol. By sending a large number of attack messages with forged source addresses to the ports where the network service is located, it may cause the half-open connection queue in the target server to be full, thus preventing other legitimate users from accessing. This kind of attack was discovered as early as 1996, but it still shows great vitality. Many operating systems, even firewalls and routers, cannot effectively defend against this kind of attack, and it is very difficult to trace it because it can easily forge the source address. Its packet characteristics are usually that the source sends a large number of SYN packets and lacks the last handshake ACK reply of the three handshakes.而且，还是和在教科书里学到的历史完全不同的战国时代……《共同关注》是中央电视台新闻频道一档以公益慈善为品牌特色的日播专题栏目，以“关注弱势群体，搭建互助平台，讲述新闻故事，彰显和谐关怀”为栏目定位，以打造中国百姓的精神家园为栏目核心理念。