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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.　离边境不远的巴音杭盖牧场上，有一座黄色的俄式旧屋，屋子的主人呼毕泰称安为"别墅"。本剧改编自Kate Atkinson在2013年获得科斯塔奖的同名小说。Aban brought out historical details while telling the news. Many materials are rare and therefore precious. Regarding Sun Yat-sen's request for help from the United States and Britain before his death, he obtained first-hand information from the U.S. Consulate in Guangzhou and was the first person in the world to report the matter. When the Jinan massacre occurred, Aban was the only non-Japanese reporter on the scene, and his statement of the incident was of great historical value. Before the September 18 Incident, Aban was prompted by the Japanese in advance, traveled all over the Northeast and made the first forecast.That's it!MinLength: 6: is a string separated by a colon, the minLength in front of the colon represents the strategys object selected by the customer, the number 6 after the colon represents the parameters that must be verified during the validation process, and the minLength: 6 means that the value of the validation registerForm.password text input box has a minimum length of 6 bits; If the string does not contain colons, no additional validation information is needed during validation.