The attacker may obtain such a list by performing a simple ping sweep using any number of freeware tools, such as Angry IP scanner or Nmap.
攻击者可能使用多种免费软件工具(如angryIPscanner或Nmap)执行一个简单的ping扫描，以获得一个列表。
No rotating sweep can be observed on the screen, but the scanner rotates all right.
屏幕上看不到扫描线运转，但天线运转正常。
No rotating sweep can be observed on the screen, but the scanner rotates all right.
屏幕上看不到扫描线运转，但天线运转正常。
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