Nmap - cross-platform network scan tool
Nmap is a power free network scan tool, it runs on Windows, Mac, Linux with GUI and Command line mode.
nmap install
- download it from: http://nmap.org/download.html
- (win) zip version, install the vcredist_x86.exe (MS VC++ lib) in that directory to avoid “dll missing” error.
- (win) zip version, install “WinPcap-namp.exe” to be able to capture package data
nmap customize
- scan the OS of an IP
nmap -O 192.168.1.1
- scan machines nearby
nmap -sP 192.168.1.0-255