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What causes this problem?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).In real life, there are many requests that cannot be made by one person. For example, the salary at the interview may be decided by the technical manager if it is less than 10,000, but the salary between 10,000 and 15,000 may not be approved by the technical manager and may need to be approved by the technical director.满族少女叶赫那拉玉兰聪慧志高，不甘于贫穷和男尊女卑的处境。道光帝六皇子奕訢南下视察民情，邂逅玉兰于雪地之中，互生情愫。奕訢又与汉人李乐天结为莫逆之交，李乐天亦钟情玉兰。道光急召奕訢返京，奕訢不及向玉兰道别而使二人间产生种种误会，玉兰决定入宫选秀女。奕訢在皇位争夺中落败，四皇子即位为咸丰帝，奕訢则封为恭亲王，并遭咸丰猜忌和权臣肃顺排挤。玉兰入宫受宠，诞下皇子，晋封懿贵妃，逐步展露政治才能和权力野心。咸丰驾崩，留密诏给皇后并命肃顺辅政，防止懿贵妃夺权。同治登位，咸丰后与懿贵妃封为东宫太后慈安与西宫太后慈禧。慈禧得到恭亲王和李乐天帮助，从肃顺手中夺回政权，展开垂帘听政，诛杀异己并骗慈安烧毁咸丰密诏。恭亲王对慈禧所为颇心寒，决定辞官回乡，慈禧得到权力却失去友情和爱情。再一次踏上淮南的土地，尹旭感慨万千，阔别数年，终于有机会再次站在这里。毛海峰不紧不慢道：明日自有人将银子送至府上。