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In the "Video Learning" section, there are the first video, short video, simulcast channel, theory, party history, massive open online course, characters, culture, literature and art, science, nature, TV series, movies, rule of law, military and other channels. Among them, the "first video" is mainly a video report on the relevant activities of General Secretary Xi Jinping. As its name implies, "simulcast channel" is CCTV news simulcast video. Massive open online course is a free public video course with a variety of courses.写出了《白发魔女传》、《第一次亲密接触》、《笑傲江湖》等一系列优秀作品的天启竟然是一个二十岁的俊朗青年。3472尹旭不愿意看到昔日的兄弟这般为难，sī下里找到章邯，询问是否存在小路秘径。这几年，还没有哪个游戏，能让他一下子玩这么长时间。Both these attacks and SYN flooding target the victim's TCP application and can interrupt the victim's service at much less cost than brute force flooding packet methods. However, SYN flooding is very different from other TCP spoofing attacks. SYN flooding attacks the services of the new connection without affecting the established connection, while other spoofing attacks break the established connection and cannot block the new connection from the beginning. SYN attacks can be stopped only by modifying the initial handshake program, while other spoofing attacks require checking every piece of data throughout the connection life cycle. What SYN flooding and other TCP spoofing attacks have in common is that they all depend on the attacker's ability to send IP packets that disguise the source address, while the same way to defend them is to deploy more address filtering or use IP Security Protocol (IPsec).This.leader ();