said by Thinkdiff:In the Apple world, the following services use UPnP: iChat audio/video, FaceTime, Back to My Mac, Find my iPhone/iPad (this can work without it, I think), Find My Mac, remote Screen Sharing, etc (there's probably a few I'm forgetting).
I use many of the above as well as Vonage. The Vonage router uses UpNp to open inbound voice ports and it does so randomly.
said by Thinkdiff:Apple routers use UPnP or a similar protocol called NAT-PMP. I'm not sure if NAT-PMP is also vulnerable in the way the article mentions, but you can safely disable it if you don't use any of the services I mentioned earlier.
Is there an external test to determine whether UpNp is accessible remotely?