Publish SQL Server in ISA 2006 for VPN Users

I've tried the server publishing rules in ISA 2006 setting up a SQL protocol 1433 and User group VPN Users, but am not able to connect from SSMS to the published sql database using VPN. I want to create a remote database connection so I can update changes from a local development server to a test server. Any recommendations or references would be appreciated. I will be upgrading to ForeFront in the near future.

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Dan Slaby