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9.1

Exchange 2007 ActiveSync Encryption Policies

Asked by srelliott2000 in Exchange Email Server, Encryption for Network Security

My question is in two parts.  First Please explain these three settings beyong the extreme lack of documentation provided by M$.

DeviceEncryptionEnabled
RequireStorageCardEncryption
RequireDeviceEncryption

Their description of 'DeviceEncryptionEnabled' is hilarious and I quote: 'This parameter specifies whether device encryption is enabled. If it is set to true, device encryption is enabled."
(http://technet.microsoft.com/en-us/library/dd251708.aspx)

What are the differences between these three?  My best guesses are:
- DeviceEncryptionEnabled allows you to turn on/off the hardward optional encryption for the mobile device if available.
- RequireStorageCardEncryption forces encryption on/off for any information stored onto a removable flash card.
- RequireDeviceEncryption if enabled ignores 'DeviceEncryptionEnabled' and forces hardware encryption on.

Are these settings only for data on the device?  

Does then SSL cert encrypt the password, username and email for the actual transmission?  Why would we use these ActiveSync settings if SSL is enabled?  Wouldn't we be encrypting the data twice with SSL and ActiceSync both active?  What's best practice?
 
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[+][-]10/19/09 04:33 PM, ID: 25609866Accepted Solution

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Zones: Exchange Email Server, Encryption for Network Security
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Solution Provided By: Delphineous
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Solution Grade: A
 
[+][-]10/19/09 03:53 PM, ID: 25609680Expert Comment

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[+][-]10/19/09 04:36 PM, ID: 25609882Expert Comment

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