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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)./puzzled一架美国飞来的飞机降落在长河市机场。兰氏集团下属长河市假日集团的新任总经理万水和女友兰妮（美国兰氏集团总裁之女）回到阔别五年的故乡。在赶往假日集团的路上，万水看见五年前的结发妻子叶梅。叶梅现在是长河市地税五分局征税科科长，独自养育她与万水的女儿小禾。叶梅发现假日集团下属水上娱乐中心水上中心有偷税之疑，便告诉老同学、也是同事的肖洪波，并查出了水上中心偷税200多万。张元是水上中心经理，仗着姐夫是长河市副市长，威胁下属珊珊（肖洪波未婚妻），要她说服肖洪波放过水上中心偷税事件，肖洪波拒绝后，张元仍然不交税款和罚金。万水虽然早几年与叶梅协议离了婚，但他对自己的女儿还有很深的挂念，因慑于兰妮的权威，不敢前去看望，只能偷偷地打听女儿的情况。税务五分局征税科长大高通过张元，当上了五分局副局长，本来这个位置应该是叶梅的，局里很多人都不服，叶梅却无所谓，叶梅与万水离婚的事是个秘密，在姐姐叶兰的追逼下，叶梅才说了出来，原来3年前万水从美国来信，要求与叶梅离婚，叶梅同意了。因水上中心没有按时交纳偷税款项和罚款胡宗宪笑着点了点桌子，还有，我已亲自做媒，湖州大户严府千金，年方十七，才艺容貌俱佳，现正在杭州，不妨一见。(1) Configure first1. Step: Draw a cube block in groups, rotate 45 degrees on the plane, then rotate 45 degrees upward on the facade with the side foot point as the axis, click parallel projection, enter the block group click surface, and right-click to align the view.