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Paolo Matarazzo
2023-09-23 14:39:16 -04:00
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windows/security/operating-system-security/data-protection/bitlocker/configure.md
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@ -290,7 +290,7 @@ This policy setting allows you to associate an object identifier from a smart ca
|-|-|-|
|[Choose how BitLocker-protected fixed drives can be recovered](#choose-how-bitlocker-protected-fixed-drives-can-be-recovered)|✅|✅|
|[Configure use of hardware-based encryption for fixed data drives](#configure-use-of-hardware-based-encryption-for-fixed-data-drives)|❌|✅|
|[Configure use of passwords for fixed data drives](#configure-use-of-passwords-for-fixed-data-drives)❌|✅|
|[Configure use of passwords for fixed data drives](#configure-use-of-passwords-for-fixed-data-drives)|❌|✅|
|[Configure use of smart cards on fixed data drives](#configure-use-of-smart-cards-on-fixed-data-drives)|❌|✅|
|[Deny write access to fixed drives not protected by BitLocker](#deny-write-access-to-fixed-drives-not-protected-by-bitlocker)|✅|✅|
|[Enforce drive encryption type on fixed data drives](#enforce-drive-encryption-type-on-fixed-data-drives)|✅|✅|
@ -352,6 +352,8 @@ This policy setting allows you to associate an object identifier from a smart ca
### Choose how BitLocker-protected removable drives can be recovered
This policy setting allows you to control how BitLocker-protected removable data drives are recovered in the absence of the required credentials. This policy setting is applied when you turn on BitLocker. The "Allow data recovery agent" check box is used to specify whether a data recovery agent can be used with BitLocker-protected removable data drives. Before a data recovery agent can be used it must be added from the Public Key Policies item in either the Group Policy Management Console or the Local Group Policy Editor. Consult the BitLocker Drive Encryption Deployment Guide on Microsoft TechNet for more information about adding data recovery agents. In "Configure user storage of BitLocker recovery information" select whether users are allowed, required, or not allowed to generate a 48-digit recovery password or a 256-bit recovery key. Select "Omit recovery options from the BitLocker setup wizard" to prevent users from specifying recovery options when they turn on BitLocker on a drive. This means that you will not be able to specify which recovery option to use when you turn on BitLocker, instead BitLocker recovery options for the drive are determined by the policy setting. In "Save BitLocker recovery information to Active Directory Domain Services" choose which BitLocker recovery information to store in AD DS for removable data drives. If you select "Backup recovery password and key package", both the BitLocker recovery password and key package are stored in AD DS. If you select "Backup recovery password only" only the recovery password is stored in AD DS. Select the "Do not enable BitLocker until recovery information is stored in AD DS for removable data drives" check box if you want to prevent users from enabling BitLocker unless the computer is connected to the domain and the backup of BitLocker recovery information to AD DS succeeds. Note: If the "Do not enable BitLocker until recovery information is stored in AD DS for fixed data drives" check box is selected, a recovery password is automatically generated. If you enable this policy setting, you can control the methods available to users to recover data from BitLocker-protected removable data drives. If this policy setting is not configured or disabled, the default recovery options are supported for BitLocker recovery. By default a DRA is allowed, the recovery options can be specified by the user including the recovery password and recovery key, and recovery information is not backed up to AD DS
| | Path |
|--|--|
| **CSP** | Not available |
@ -359,6 +361,8 @@ This policy setting allows you to associate an object identifier from a smart ca
### Configure use of hardware-based encryption for removable data drives
This policy setting allows you to manage BitLocker's use of hardware-based encryption on removable data drives and specify which encryption algorithms it can use with hardware-based encryption. Using hardware-based encryption can improve performance of drive operations that involve frequent reading or writing of data to the drive. If you enable this policy setting, you can specify additional options that control whether BitLocker software-based encryption is used instead of hardware-based encryption on computers that do not support hardware-based encryption and whether you want to restrict the encryption algorithms and cipher suites used with hardware-based encryption. If you disable this policy setting, BitLocker cannot use hardware-based encryption with operating system drives and BitLocker software-based encryption will be used by default when the drive is encrypted. If you do not configure this policy setting, BitLocker will use software-based encryption irrespective of hardware-based encryption availability. Note: The "Choose drive encryption method and cipher strength" policy setting does not apply to hardware-based encryption. The encryption algorithm used by hardware-based encryption is set when the drive is partitioned. By default, BitLocker uses the algorithm configured on the drive to encrypt the drive. The "Restrict encryption algorithms and cipher suites allowed for hardware-based encryption" option enables you to restrict the encryption algorithms that BitLocker can use with hardware encryption. If the algorithm set for the drive is not available, BitLocker will disable the use of hardware-based encryption. Encryption algorithms are specified by object identifiers (OID). For example: - AES 128 in CBC mode OID: 2.16.840.1.101.3.4.1.2 - AES 256 in CBC mode OID: 2.16.840.1.101.3.4.1.42
| | Path |
|--|--|
| **CSP** | Not available |
@ -366,6 +370,8 @@ This policy setting allows you to associate an object identifier from a smart ca
### Configure use of passwords for removable data drives
This policy setting specifies whether a password is required to unlock BitLocker-protected removable data drives. If you choose to allow use of a password, you can require a password to be used, enforce complexity requirements, and configure a minimum length. For the complexity requirement setting to be effective the Group Policy setting "Password must meet complexity requirements" located in Computer Configuration\Windows Settings\Security Settings\Account Policies\Password Policy\ must be also enabled. Note: These settings are enforced when turning on BitLocker, not when unlocking a volume. BitLocker will allow unlocking a drive with any of the protectors available on the drive. If you enable this policy setting, users can configure a password that meets the requirements that you define. To require the use of a password, select "Require password for removable data drive". To enforce complexity requirements on the password, select "Require complexity". When set to "Require complexity" a connection to a domain controller is necessary when BitLocker is enabled to validate the complexity the password. When set to "Allow complexity" a connection to a domain controller will be attempted to validate the complexity adheres to the rules set by the policy, but if no domain controllers are found the password will still be accepted regardless of actual password complexity and the drive will be encrypted using that password as a protector. When set to "Do not allow complexity", no password complexity validation will be done. Passwords must be at least 8 characters. To configure a greater minimum length for the password, enter the desired number of characters in the "Minimum password length" box. If you disable this policy setting, the user is not allowed to use a password. If you do not configure this policy setting, passwords will be supported with the default settings, which do not include password complexity requirements and require only 8 characters. Note: Passwords cannot be used if FIPS-compliance is enabled. The "System cryptography: Use FIPS-compliant algorithms for encryption, hashing, and signing" policy setting in Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options specifies whether FIPS-compliance is enabled.
| | Path |
|--|--|
| **CSP** | Not available |
@ -373,6 +379,8 @@ This policy setting allows you to associate an object identifier from a smart ca
### Configure use of smart cards on removable data drives
This policy setting allows you to specify whether smart cards can be used to authenticate user access to BitLocker-protected removable data drives on a computer. If you enable this policy setting smart cards can be used to authenticate user access to the drive. You can require a smart card authentication by selecting the "Require use of smart cards on removable data drives" check box. Note: These settings are enforced when turning on BitLocker, not when unlocking a drive. BitLocker will allow unlocking a drive with any of the protectors available on the drive. If you disable this policy setting, users are not allowed to use smart cards to authenticate their access to BitLocker-protected removable data drives. If you do not configure this policy setting, smart cards are available to authenticate user access to a BitLocker-protected removable data drive.
| | Path |
|--|--|
| **CSP** | Not available |
@ -380,23 +388,30 @@ This policy setting allows you to associate an object identifier from a smart ca
### Control use of BitLocker on removable drives
This policy setting controls the use of BitLocker on removable data drives. This policy setting is applied when you turn on BitLocker. When this policy setting is enabled you can select property settings that control how users can configure BitLocker. Choose "Allow users to apply BitLocker protection on removable data drives" to permit the user to run the BitLocker setup wizard on a removable data drive. Choose "Allow users to suspend and decrypt BitLocker on removable data drives" to permit the user to remove BitLocker Drive encryption from the drive or suspend the encryption while maintenance is performed. Consult the BitLocker Drive Encryption Deployment Guide on Microsoft TechNet for more information on suspending BitLocker protection. If you do not configure this policy setting, users can use BitLocker on removable disk drives. If you disable this policy setting, users cannot use BitLocker on removable disk drives.
| | Path |
|--|--|
| **CSP** | Not available |
| **CSP** | `./Device/Vendor/MSFT/BitLocker/`[RemovableDrivesConfigureBDE](/windows/client-management/mdm/bitlocker-csp#removabledrivesconfigurebde) |
| **GPO** | **Computer Configuration** > **Administrative Templates** > **Windows Components** > **BitLocker Drive Encryption** > **Removable Data Drives** |
### Deny write access to removable drives not protected by BitLocker
This policy setting configures whether BitLocker protection is required for a computer to be able to write data to a removable data drive. If you enable this policy setting, all removable data drives that are not BitLocker-protected will be mounted as read-only. If the drive is protected by BitLocker, it will be mounted with read and write access. If the "Deny write access to devices configured in another organization" option is selected, only drives with identification fields matching the computer's identification fields will be given write access. When a removable data drive is accessed it will be checked for valid identification field and allowed identification fields. These fields are defined by the "Provide the unique identifiers for your organization" policy setting. If you disable or do not configure this policy setting, all removable data drives on the computer will be mounted with read and write access. Note: This policy setting can be overridden by the policy settings under User Configuration\Administrative Templates\System\Removable Storage Access. If the "Removable Disks: Deny write access" policy setting is enabled this policy setting will be ignored.
| | Path |
|--|--|
| **CSP** | Not available |
| **CSP** | `./Device/Vendor/MSFT/BitLocker/`[RemovableDrivesRequireEncryption](/windows/client-management/mdm/bitlocker-csp#removabledrivesrequireencryption) |
| **GPO** | **Computer Configuration** > **Administrative Templates** > **Windows Components** > **BitLocker Drive Encryption** > **Removable Data Drives** |
### Enforce drive encryption type on removable data drives
This policy setting allows you to configure the encryption type used by BitLocker Drive Encryption. This policy setting is applied when you turn on BitLocker. Changing the encryption type has no effect if the drive is already encrypted or if encryption is in progress. Choose full encryption to require that the entire drive be encrypted when BitLocker is turned on. Choose used space only encryption to require that only the portion of the drive used to store data is encrypted when BitLocker is turned on. If you enable this policy setting the encryption type that BitLocker will use to encrypt drives is defined by this policy and the encryption type option will not be presented in the BitLocker setup wizard. If you disable or do not configure this policy setting, the BitLocker setup wizard will ask the user to select the encryption type before turning on BitLocker.
| | Path |
|--|--|
| **CSP** | Not available |
| **CSP** | `./Device/Vendor/MSFT/BitLocker/`[RemovableDrivesEncryptionType](/windows/client-management/mdm/bitlocker-csp#removabledrivesencryptiontype) |
| **GPO** | **Computer Configuration** > **Administrative Templates** > **Windows Components** > **BitLocker Drive Encryption** > **Removable Data Drives** |
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