摘要： http://nmap.org/bennieston-tutorial/实例：nmap -sP 192.168.21.*Contents1IntroductionNmap is a free, open-source port scanner available for both UNIX and Windows. It has an optional graphical front-end, NmapFE, and supports a wide variety of scan types, each one with different benefits and drawbacks.Thi 阅读全文