open connection to microsoft port 3544

[richard]

Windows 7 home premium 64 bit

My comodo firewall reported an open connection with an IP of
65.55.118.158:3544 which is owned by microsoft.
Anyone know why M$ is doing this? What information are they obtaining?

 

[Mike Paff]

Windows 7 home premium 64 bit

My comodo firewall reported an open connection with an IP of
65.55.118.158:3544 which is owned by microsoft.
Anyone know why M$ is doing this? What information are they obtaining?

This is probably related to Teredo tunneling which allows an IPv6
to operate over an IPv4 connection.

http://en.wikipedia.org/wiki/Teredo_tunneling#Firewalling.2C_filtering.2C_and_blocking