Find Open Port(s) on Address(es)

So, I was trying to find out which PC on a network (which I was VPN’d into) had VNC running on it. NetBIOS wasn’t working, so I couldn’t access the PC by name. All the tools that I found just didn’t work properly for doing a port scan on a range of addresses over VPN. So, I threw together a portscanner in Python (v2.6.6) really fast.
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