I would like to see what other people who want to externally expose FIM 2010 R2 Password Registration are doing to achieve this scenario? The goal being a supported scenario where a user can register their security questions from a tablet or smart phone, library, coffee shop, or any where externally from the internet.
I have made a blog post about the solution I came up with, but it's less than ideal since I wanted this supported out of the box with FIM R2.