IP Filtering Config
You may notice that the newest version of the Application Configuration Center contains fields for configuring your IP Filtering settings. This extra security measure is not generally needed for HealthVault applications, except in special cases. If you enter a non-null address range in this field then you will effectively turn on filtering for your application in HealthVault-PPE. If you do this accidentally then you can turn IP filtering off again by clearing out this field.
If you have an application which is live in the production HealthVault environment and are using IP Filtering there, you still need to go through the Microsoft team in order to update your Production settings as the settings in the config tool are for PPE. You can contact Microsoft for these types of updates via the hsg-pn@microsoft.com email alias. Expect the update to take a few business days.