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For spoofing attacks, the first thing to consider is to choose the address. For the attack to succeed, the host on the spoofed IP address must not respond to any SYN-ACK packets sent to them. A very simple method that an attacker can use is to disguise only one source IP address, and this IP address will not respond to SYN-ACK packets, perhaps because there is no host on this IP address at all, or because some configuration has been made to the address or network properties of the host. Another option is to disguise many source addresses, and attackers will assume that hosts on some of these disguised addresses will not respond to SYN-ACK packets. To implement this method, you need to recycle the addresses on the list of source IP addresses that the server wants to connect to, or make the same modifications to hosts in a subnet.ALTER DATABASE SSDB SET SINGLE_USER电影《一纸婚约》讲述了女主角叶子（刘熙阳饰）为了买房和男朋友（张一山饰）结婚，不惜与大学教授王枫（张辉 饰）假结婚，看似一切进展顺利的时候，却遭遇男友移情别恋，这令叶子万念俱灰，只能靠酒精来麻痹自己，与此同时，王枫因为一场意外成为了植物人，而此时婚约还未解除，面对瘫痪在床的“半路夫妻”年轻迷茫的叶子将何去何从？Japan's transportation system is relatively complicated. There are several kinds of ticketing machines in Nagoya subway system. Xiao Bian will explain them one by one.Representative works include "Swords of Legends", "Living Colors and Fragrance", "Four Famous Young Arresters", "Swordsman Legend of Shushan War", "Old Jiumen" and "Drunk and Exquisite". If you like watching domestic dramas, you cannot fail to know him unless you only watch anti-Japanese movies.原来，他刚才用小锄头刨山芋的时候，不小心锄到脚背上了。