Easy Operating System Detection with nmap
Recently I was doing some discovery at work of some systems we inherited. I didn't yet have access but wanted to determine what type of OS was involved so I could coordinate with the proper teams. You can often guess just by determining what ports are open, but the most efficient tool is the venerable nmap utility. Using the -O (OS detection) and -sV (check ports to determine service/version info) flags, you get a compl...
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