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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).当然了，不能忽视英布志向远大，想要北上中原争夺天下，那就势必要和我们为敌。步平凡是六一班的小学生，聪明、顽皮、讲义气，知识渊博，喜欢搞恶作剧。一天，由于一个很偶然的意外，步平凡陷入昏迷之中。步平凡的爸爸、妈妈万分着急，想了各种办法为步平凡治病，都没有效果。步平凡的同学在万般无奈的情况下，向快乐星球发出了求救信号。　摆脱了黑暗星球的骚扰，快乐星球的生活又恢复了平静。棒棒是快乐星球的小发明家，他对中国灿烂的古代文明非常有兴趣，暗地里一直在研究前往大唐王朝的时空穿梭机。老顽童爷爷收到步平凡爸爸的求救信号，决定派棒棒和防火墙去帮助步平凡。 　　Q星球的Q博士是一个野心很大、自视甚高的科学天才，他的梦想就是利用科学征服整个宇宙。但是， 　　Q博士也明白，仅凭他个人的力量，根本不可能实现自己的梦想。于是，他想到了利用地球上磁场口问题，试图用消磁的办法来毁灭人类。故事围绕着三方任务的行为展开。该剧讲述了为帮被控涉嫌贩运毒品的缪兰洗刷冤情，年青有为的律师韩绪与多位魅惑十足的红罂粟女郎，陷入了一场生与死、正与邪的较量。两人蒙面夜闯寝宫行刺昏庸无能的皇帝，夜裡传来皇帝的惊叫…大事不好，出事啦～Be steadfast and steady: