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While I was opening some ports on my ADSL router (a Sagem Livebox 1.1) I'd noticed that there were perhaps >100 registered UDP entries on random port numbers, all titled "Teredo". All evidence points to a VAIO laptop running Windows 7 that must be setting these ports automatically via WLAN. The computer in question is an office PC that doesn't use any particular network applications except a browser and Skype.
My other computer (running mainly Vista) and using a larger suite of applications has exactly 1 Teredo port registered on the router. What could be causing this behaviour? Is it some quirk caused by some Sony bloatware updater? I wouldn't want to end up with 65536 open ports on my firewall!
I've noticed someone didn't like me using the word mainly when referring to the Vista system. I said precisely mainly because it's a dual boot machine that occasionally boots into Ubuntu instead, but not on a daily basis. – Thomas K. – 2013-11-06T20:36:33.510