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Dell PowerEdge T360 Installation and Service Manual

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System Security

To view the System Security screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > System Security.
Table 1. System Security detailsThis table provides the details of the options available on the System Security screen.
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.
Strong Password Status If enabled, you must set up a password that has at least one character in lowercase, uppercase, digit, and a special character. Also, you have the option to set the minimum number of characters in both the new passwords. If disabled, you can set a password that has any character in it but the passwords must not have more than 32 characters. Changes made by enabling or disabling this feature become immediately effective.
Strong Password Minimum Length (8 to 32) Controls the minimum number of characters used when setting a system or setup password. You can specify 8-32 characters.
System Password Sets 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 Sets the setup password. This option is read-only if the password jumper is not installed in the system.
Password Status Locks the system password. This option is set to Unlocked by default.
TPM Information Indicates the type of Trusted Platform Module, if present.
Table 2. TPM 2.0 security informationThis table describes the TPM 2.0 security information.
Option Description
TPM Information
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. When set to Off, the presence of the TPM is not reported to the OS. When set to On, the presence of the TPM is reported to the OS. The TPM Security option is set to Off by default.
When TPM 2.0 is installed, the TPM Security option is set to On or Off. This option is set to Off by default.
TPM Information Indicates the type of Trusted Platform Module, if present.
TPM Firmware Indicates the firmware version of the TPM.
TPM Hierarcy Enables, disables, or clears the storage and endorsement hierarchies. When set to Enabled, the storage and endorsement hierarchies can be used.
When set to Disabled, the storage and endorsement hierarchies cannot be used.
When set to Clear, the storage and endorsement hierarchies are cleared of any values, and then reset to Enabled.
TPM Advanced Settings TPM PPI Bypass Provision When set to Enabled, allows the Operating System to bypass Physical Presence Interface (PPI) prompts when issuing PPI Advanced Configuration and Power interface (ACPI) provisioning operations.
TPM PPI Bypass Clear When set to Enabled allows the Operating System to bypass Physical Presence Interface (PPI) prompts when issuing PPI Advanced Configuration and Power Interface (ACPI) clear operations.
TPM2 Algorithm Selection

Allows the user to change the cryptographic algorithms used in the Trusted Platform Module (TPM). The available options are dependent on the TPM firmware.
  

To enable TPM2 Algorithm Selection, Intel(R) TXT technology must be disabled.
  

The TPM2 Algorithm Selection option supports SHA1 and SHA256 by detecting the TPM module. This option is set to
SHA256 by default.
  
Table 3. System Security detailsThis table provides the details of the options available on the System Security screen.
Option Description
Power button: Enables or disables 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.
NOTE:The host system will not power on up until iDRAC Root of Trust (RoT) is completed, host power on will be delayed by minimum 90 seconds after the AC applied.
AC Power Recovery Delay Sets the time delay for the system to power up after AC power is restored to the system. This option is set to Immediate by default. When this option is set to Immediate, there is no delay for power up. When this option is set to Random, the system creates a random delay for power up. When this option is set to User Defined, the system delay time is manually to power up.
User Defined Delay (120 s to 600 s) Sets the User Defined Delay option when the User Defined option for AC Power Recovery Delay is selected. The actual AC recovery time needs to add iDRAC root of trust time (around 50 seconds).
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.
SMM Security Mitigation Enables or disables the UEFI SMM security migration protections. It is set to Disabled by default.
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 the Secure Boot policy is set to Standard, the BIOS uses the system manufacturer’s key and certificates to authenticate pre-boot images. When the Secure Boot policy is set to Custom, the BIOS uses the user-defined key and certificates. When set to Linux(R) Boot, VMware(R) Boot, or Microsoft(R) Boot, the Secure Boot policy includes only the certificates necessary for the corresponding operating system. The Secure Boot policy is set to Standard by default.
Secure Boot Mode Configures 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.
Below are the details of different boot modes available in the Secure Boot Mode option.
User Mode
In User Mode, PK must be installed, and BIOS performs signature verification on programmatic attempts to update policy objects. The BIOS allows unauthenticated programmatic transitions between modes.
Audit mode
In Audit Mode, PK is not present. BIOS does not authenticate programmatic update to the policy objects and transitions between modes. The BIOS performs a signature verification on pre-boot images and logs the results in the image Execution Information Table, but executes the images whether they pass or fail verification. Audit Mode is useful for programmatic determination of a working set of policy objects.
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. Below are the list of options available on the Secure Boot Policy Summary screen:
  1. Platform Key (PK)
  2. Key Exchange Key (KEK) Database Entries
  3. Authorized Signature Database (db) Entries

    The options above are described through the following fields:

    • Type
    • Issuer
    • Subject
    • Signature Owner GUID
  4. Forbidden Signature Database (dbx) Entries
Secure Boot Custom Policy Settings Configures the Secure Boot Custom Policy. To enable this option, set the Secure Boot Policy to Custom option. Below are the list of options available on the Secure Boot Custom Policy Settings screen:
  1. Platform Key (PK)
  2. Key Exchange Key (KEK) Database
  3. Authorized Signature Database (db)
  4. Forbidden Signature Database (dbx)
  5. Delete All Policy Entries (PK, KEK, db, and dbx)
  6. Restore Default Policy Entries (PK, KEK, db, and dbx)
  7. Export Firmware Hash Values

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