SCVMM 2012 and remote connection

Good day. I ask to clarify the situation. There hv-host c installed SCVMM 2012 and accessible through a web via app controller. It has a private cloud. Customers from domain network connected through the console as well as through the web site. But if
I connect from the outside - app controller gives an error that "the credentials that were used to connect did not work", using the same data. I understand that I am outside the domain network. In what direction I "dig"?

Can you check this thread and see if it is helpful?
http://social.technet.microsoft.com/Forums/en-US/65d3550c-9c9c-48f3-bd06-9166bf265dd8/connecting-to-vm-console-outside-of-domain?forum=appcontroller
Kristian (Virtualization and some coffee: http://kristiannese.blogspot.com )

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