Any Net Op or Sys Op worth their salt has Nmap in their arsenal of tools. Nmap is a very powerful network tool that's been around for a good long time with its roots in UNIX. My first time using it was on a Sun SPARC 20 running SunOS more than a decade ago. (Ouch, did I just date myself?) While not the prettiest thing on earth, it may just be the most powerful. But…
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