"SoftPerfect Network Scanner" mali i besplatan programcic koji skenira raspon IP adresa koji mu je zadat, pronalazi aktivne IP adrese, ime racunara, logovanog User-a, mac adresu, otvorene portove...
Meni je pomogao u resavanju mnogih problema.
http://www.softperfect.com/products/networkscanner
I have not failed. I've just found 10,000 ways that won't work. (Thomas Edison)