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Process Hacker. There are numerous programs like it with different names but they all do the same.
http://processhacker.sourceforge.net/
uhhh - if you have access[have] to a cisco router you can do it from there too.
I think a Cisco 7XXX series can do that actually. Those are the ones that are like... super huge. Also I know for a fact that there is some hard-ware solution for that [which you would put into a Cisco router/switch] and allow you to do it that way. That's how my dad's company does it...