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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.There are two kinds of long-range soldiers, one is linear flying props and the other is parabolic flying props.这两人有着其他人类所不具备的特殊力量。她们能够演唱出产生治愈伤口、创造出水、点火等各种各样奇迹的歌声。一名生殖医学医生喝醉酒，竟用前男友的精子为自己人工授精。这下她怀孕了却有理说不清，只好想办法把对方追回来。