I run the Sygate Port Scan every now and then, and it always shows all ports blocked and stealthed. To my suprise, today it shows the UPnP port open. I run Zone Alarm Pro, and I thought it would block it, or at least it has been. I know I can use the Windows XP Firewall to block UPnP, but to run both firewalls slows things down to much. I downloaded this little ap and it seems to block UPnP when I run the test. But, I know there must be another way to stop this, because it hasn't always been open when I scan it. Is there a setting in Windows or Zone Alarm to block it?