- Notes, cautions, and warnings
- Pre-operating system management applications
- Options to manage the pre-operating system applications
- System Setup
- Viewing System Setup
- System Setup details
- System BIOS
- Viewing System BIOS
- System BIOS Settings details
- System Information
- Viewing System Information
- System Information details
- Memory Settings
- Viewing Memory Settings
- Memory Settings details
- Processor Settings
- Viewing Processor Settings
- Processor Settings details
- SATA Settings
- Viewing SATA Settings
- SATA Settings details
- NVMe Settings
- Viewing NVMe Settings
- NVMe Settings details
- Boot Settings
- Viewing Boot Settings
- Boot Settings details
- Choosing system boot mode
- Changing boot order
- Network Settings
- Viewing Network Settings
- Network Settings screen details
- Integrated Devices
- Viewing Integrated Devices
- Integrated Devices details
- Serial Communication
- Viewing Serial Communication
- Serial Communication details
- System Profile Settings
- Viewing System Profile Settings
- System Profile Settings details
- System Security
- Viewing System Security
- System Security Settings details
- Creating a system and setup password
- Using your system password to secure the system
- Deleting or changing system and setup password
- Operating with setup password enabled
- Redundant OS Control
- Viewing Redundant OS Control
- Redundant OS Control screen details
- Miscellaneous Settings
- Viewing Miscellaneous Settings
- Miscellaneous Settings details
- iDRAC Settings utility
- Device Settings
- Dell Lifecycle Controller
- Boot Manager
- PXE boot
Dell PowerEdge R940 BIOS and UEFI Reference Guide
System Security Settings details
About this task
- Option
- Description
- CPU AES-NI
- Improves the speed of applications by performing encryption and decryption by using the Advanced Encryption Standard Instruction Set (AES-NI). This option is set to Enabled by default.
- System Password
- Enables you to set the system password. This option is set to Enabled by default and is read-only if the password jumper is not installed in the system.
- Setup Password
- Enables you to set the system setup password. This option is read-only if the password jumper is not installed in the system.
- Password Status
- Enables you to lock the system password. This option is set to Unlocked by default.
- TPM Security
-
NOTE The TPM menu is available only when the TPM module is installed.Enables you to control the reporting mode of the TPM. The TPM Security option is set to Off by default. You can only modify the TPM Status TPM Activation, and the Intel TXT fields if the TPM Status field is set to either On with Pre-boot Measurements or On without Pre-boot Measurements.
- TPM Information
- Indicates the type of Trusted Platform Module, if present.
- TPM Status
- Specifies the TPM status.
- TPM Command
- Controls the Trusted Platform Module (TPM). When set to
None, no command is sent to the TPM. When set to
Activate, the TPM is enabled and activated. When set to
Deactivate, the TPM is disabled and deactivated. When set to
Clear, all the contents of the TPM are cleared. This option is set to
None by default.
CAUTION Clearing the TPM results in the loss of all keys in the TPM. The loss of TPM keys may affect booting to the operating system.This field is read-only when TPM Security is set to Off. The action requires an additional reboot before it can take effect.
- TPM Advanced Settings
- This setting is enabled only when TPM Security is set to ON.
- Intel(R) TXT
- Enables you to set the Intel Trusted Execution Technology (TXT) option. To enable the Intel TXT option, virtualization technology and TPM Security must be enabled with Pre-boot measurements. This option is set to Off by default.
- Power Button
- Enables you to set the power button on the front of the system. This option is set to Enabled by default.
- AC Power Recovery
- Sets how the system behaves after AC power is restored to the system. This option is set to Last by default.
- AC Power Recovery Delay
- Enables you to set the time that the system should take to turn on after AC power is restored to the system. This option is set to Immediate by default.
- User Defined Delay (60 s to 600 s)
- Enables you to set the User Defined Delay option when the User Defined option for AC Power Recovery Delay is selected.
- UEFI Variable Access
- Provides varying degrees of securing UEFI variables. When set to Standard (the default), UEFI variables are accessible in the operating system per the UEFI specification. When set to Controlled, selected UEFI variables are protected in the environment, and new UEFI boot entries are forced to be at the end of the current boot order.
- In-Band Manageability Interface
- When set to
Disabled, this setting hides the Management Engine's (ME), HECI devices, and the system's IPMI devices from the operating system. This prevents the operating system from changing the ME power capping settings, and blocks access to all in-band management tools. All management should be managed through out-of-band. This option is set to
Enabled by default.
NOTE BIOS update requires HECI devices to be operational and DUP updates require IPMI interface to be operational. This setting needs to be set to Enabled to avoid updating errors.
- Secure Boot
- Enables Secure Boot, where the BIOS authenticates each pre-boot image by using the certificates in the Secure Boot Policy. Secure Boot is set to Disabled by default.
- Secure Boot Policy
- When Secure Boot policy is set to Standard, the BIOS uses the system manufacturer key and certificates to authenticate pre-boot images. When Secure Boot policy is set to Custom, the BIOS uses the user-defined key and certificates. Secure Boot policy is set to Standard by default.
- Secure Boot Mode
- Enables you to configure how the BIOS uses the Secure Boot Policy Objects (PK, KEK, db, dbx).
If the current mode is set to Deployed Mode, the available options are User Mode and Deployed Mode. If the current mode is set to User Mode, the available options are User Mode, Audit Mode, and Deployed Mode.
- Options
- Description
- User Mode
-
In User Mode, PK must be installed, and BIOS performs signature verification on programmatic attempts to update policy objects.
BIOS allows unauthenticated programmatic transitions between modes.
- Audit Mode
-
In Audit mode, PK is not present. BIOS does not authenticate programmatic updates to the policy objects, and transitions between modes.
Audit Mode is useful for programmatically determining a working set of policy objects.
BIOS performs signature verification on pre-boot images. BIOS also logs the results in the image Execution Information Table, but approves the images whether they pass or fail verification.
- Deployed Mode
-
Deployed Mode is the most secure mode. In Deployed Mode, PK must be installed and the BIOS performs signature verification on programmatic attempts to update policy objects.
Deployed Mode restricts the programmatic mode transitions.
- Secure Boot Policy Summary
- Specifies the list of certificates and hashes that secure boot uses to authenticate images.
- Secure Boot Custom Policy Settings
- Configures the Secure Boot Custom Policy. To enable this option, set the Secure Boot Policy to Custom.
Please provide ratings (1-5 stars).
Please provide ratings (1-5 stars).
Please provide ratings (1-5 stars).
Please select whether the article was helpful or not.
Comments cannot contain these special characters: <>()\