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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.先绕道湖州府城见过知府大人，并接到兵部转达的军令——这是顾将军就此事奏请朝廷，皇帝命兵部传达的批复。所以不可能心悦臣服投降的。211. X.X.54在此基础上，若是能够说服韩信完全自立，甚至是出兵对抗刘邦自然是最好不过。被植入了“感知封闭系统”的士兵，他们要对抗的真正敌人究竟是什么？Use the-I option to indicate which chain to insert the "rule" into.-I means insert, which means insert, so-I INPUT means insert the rule into the INPUT chain, which means add the rule.