Using Nmap: Detecting a Remote OS

Using nmap to detect the operating system of a remote host. The command used is:

nmap 192.168.1.109 -sV -O

If the -O flag is the only one used, nmap will have less data to compare to it's known list of operating systems. Using -O with a known open service (as discovered in previous tutorials) it gives nmap more evidence to narrow down potential operating systems.