As you probably know we shipped Dynamics NAV 2009 R2 with a few features to support running the RoleTailored Client over WAN. Specifically we added the capability of using Certificates to validate the Server that the client is connecting to and a Login dialog that enables a NAV user to type in credentials that are different from his/hers current windows credentials. How to use and configure this is well documented and available on MSDN at this point.
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