xprobe2: Xprobe2 (active os fingerprinting tool)
xprobe2: 
xprobe2: Xprobe2 allows you to determine what operating system is running on a
xprobe2: remote host. It sends several packets to a host and analyses the
xprobe2: returned answers.
xprobe2: Xprobe2's functionality is comparable to the OS fingerprinting
xprobe2: feature in nmap 
xprobe2:
xprobe2:
xprobe2:
xprobe2: