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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).(This calculation method will have a maximum error of 5%, please understand)科学家终于发现了往返古今、令时光倒流的神秘缺口，却无法估计原始恐龙一旦造访，今天的洛杉矶，将会出现如何灾难性的暴虐……The second castle also has some dead socks, but not many.临行前一晚，他抱着已经牙牙学语的小念祖抱怨道：整天打呀杀的，打下来那么大的疆土，能治理得了么？鞭长莫及懂不懂？周菡依依不舍，愁眉道：那王爷就莫要拼命，只做个样子就好了。One Observer interface: