The Intel^® Management Engine BIOS Extension (MEBx) provides platform-level configuration options for you to configure the behavior of Management Engine (ME) platform. Options include enabling and disabling individual features and setting power configurations.

This section provides details about MEBx configuration options and constraints, if any.

All the ME Configuration setting changes are not cached in MEBx. They are note committed to ME nonvolatile memory (NVM) until you exit MEBx. Hence, if MEBx crashes, the changes made until that point are NOT going to     be committed to ME NVM.

Accessing MEBx Configuration User Interface

The MEBx configuration user interface can be accessed on a computer through the following steps:

The main menu presents three function selections:

• Intel ME Configuration
• Intel AMT Configuration
• Change Intel ME Password

Changing the Intel ME Password

The default password is admin and is the same on all newly deployed platforms. You must change the default password before changing any feature configuration options.

To reach the Intel® Management Engine (ME) Platform Configuration page, follow these steps:

1. Under the Management Engine BIOS Extension (MEBx) main menu, select ME Configuration. Press <Enter>.
2. The following message appears:
   System resets after configuration changes. Continue: (Y/N)
3. Press <Y>.

The ME Platform Configuration page opens. This page allows you to configure the specific functions of the ME such as features, power options, and so on. Below are quick links to the various sections.

• Intel ME State Control
• Intel ME Firmware Local Update Qualifier
• Intel ME Features Control
  • Manageability Feature Selection
• Intel ME Power Control
  • Intel ME ON in Host Sleep States

Intel ME State Control

When the ME State Control option is selected on the ME Platform Configuration menu, the ME State Control menu appears. You can disable ME to isolate the ME computer from main platform until the end of the debugging process.

When enabled, the ME State Control option lets you disable ME to isolate the ME computer from the main platform while debugging a field malfunction. The table below illustrates the details of the options.

ME Platform State Control
Option	Description
Enabled	Enable the Management Engine on the platform
Disabled	Disable the Management Engine on the platform

In fact, the ME is not really disabled with the Disabled option. Instead, it is paused at the very early stage of its booting so the computer has no traffic originating from the ME on any of its busses, ensuring that an you can debug a computer problem without worrying about any role the ME might have played in it.

Intel ME Firmware Local Update Qualifier

This option on the ME Platform Configuration menu sets the policy for allowing the MEBx to be updated locally. The default setting is Always Open. The other settings available are Never Open and Restricted.

To assist with the manufacturing process as well as OEM-specific in-field firmware update processes, ME firmware provides an OEM- configurable capability that leaves the local firmware update channel always open no matter what value you select for the ME Firmware Local Update option.

The Always Open option allows OEMs to use the ME firmware local update channel to update the ME firmware without going through MEBx every time. If you select Always Open, the ME FW Local Update option does not appear under the ME configuration menu. The table below illustrates the detail of the options.

ME Firmware Local Update Qualifier Option
Option	Description
Always Open	The ME firmware local update channel is always enabled. A boot cycle does not change enabled to disabled. The ME FW Local Update option can be ignored.
Never	The ME firmware local update channel is controlled by the ME FW Local Update option, which can be enabled or disabled. A boot cycle changes enabled to disabled.
Restricted	The ME firmware local update channel is always enabled only if Intel AMT is in un-provision state. A boot cycle does not change enabled to disabled.

Always Open qualifies the override counter and allows local ME firmware updates. The override counter is a value set in the factory that, by default, allows local ME firmware updates. The Never Open and Restricted options disqualify the override counter and do not allow local ME firmware updates unless explicitly permitted with the Intel ME Firmware Local Update option. Selecting Never Open or Restricted adds the Intel ME Firmware Local Update option, which can be set to Enable or Disable. By default it is disabled.

Intel ME Features Control

The ME Features Control menu contains the following configuration selection.

Manageability Feature Selection

When you select the Manageability Feature Selection option on the ME Features Control menu, the ME Manageability Feature menu appears.

You can use this option to determine which manageability feature is enabled.

• ASF — Alert Standard Format. ASF is a standardized corporate assets management technology. The Intel ICH9 platform supports ASF specification 2.0.
• Intel AMT — Intel Active Management Technology. Intel AMT is an improved corporate assets management technology. Intel ICH9 platform supports Intel AMT 3.0.

The table below explains these options.

Management Feature Select Option
Option	Description
None	Manageability Feature is not selected
Intel AMT	Intel AMT manageability feature is selected
ASF	ASF manageability feature is selected

When you change the option from Intel AMT to None, a warning that Intel AMT un-provisions automatically if you accept the change appears.

The None option has no manageability feature provided by the ME computer. In this case, the firmware is loaded (that is, ME is still enabled) but the management applications remain disabled.

Intel ME Power Control

The ME Power Control menu configures the ME platform power-related options. It contains the following configuration selection.

ME On in Host Sleep States

When the ME ON in Host Sleep States option is selected on the ME Power Control menu, the ME in Host Sleep States menu loads.

The power package selected determines when the ME is turned ON. The default power package turns off the ME in all Sx (S3/S4/S5) states.

The end user administrator can choose which power package is used depending on computer usage. The power package selection page can be seen above.

Supported Power Packages
	Power Package
	1	2	3	4	5	6	7
S0 (Computer On)	ON	ON	ON	ON	ON	ON	ON
S3 (Suspend to RAM)	OFF	ON	ON	ME WoL	ME WoL	ON	ON
S4/S5 (Suspend to disk/Soft off)	OFF	OFF	ON	ON	ME WoL	ON	ME WoL
ME OFF After Power Loss	No	No	No	No	No	Yes	Yes

* WoL – Wake on LAN

If the power package selected indicates OFF After Power Loss, Intel ME remains off after returning from a mechanical off (G3) state. If the power package selected does NOT indicate OFF After Power Loss Intel ME powers the computer on (S0) briefly, then turn the computer off (S5).

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After you completely configure the Intel® Management Engine (ME) feature, you must reboot before configuring the Intel AMT for a clean system boot. The image below shows the Intel AMT configuration menu after a user selects the Intel AMT Configuration option from the Management Engine BIOS Extension (MEBx) main menu. This feature allows you to configure an Intel AMT capable computer to support the Intel AMT management features.

You need to have a basic understanding of networking and computer technology terms, such as TCP/IP, DHCP, VLAN, IDE, DNS, subnet mask, default gateway, and domain name. Explaining these terms is beyond the scope of this document.

The Intel AMT Configuration page contains the user-configurable options listed below.

For images of these menu options, see Enterprise Mode and SMB Mode.

Menu Options

Host Name

A hostname can be assigned to the Intel AMT capable computer. This is the host name of the Intel AMT-enabled computer. If Intel AMT is set to DHCP, the host name MUST be identical to the operating system machine name.

TCP/IP

Allows you to change the following TCP/IP configuration of Intel AMT.

• Network interface – ENABLE** / DISABLED
  If the network interface is disabled, all the TCP/IP settings are no longer needed.
• DHCP Mode – ENABLE** / DISABLED
  If DHCP Mode is enabled, TCP/IP settings are configured by a DHCP server.

If DHCP mode is disabled, the following static TCP/IP settings are required for Intel AMT. If a computer is in static mode it needs a separate MAC address for the Intel Management Engine. This extra MAC address is often called the Manageability MAC (MNGMAC) address. Without a separate Manageability MAC address, the computer can NOT be set to static mode.

• IP address – Internet address of the Intel Management Engine.
• Subnet mask – The subnet mask used to determine what subnet IP address belongs to.
• Default Gateway address – The default gateway of the Intel Management Engine.
• Preferred DNS address – Preferred domain name server address.
• Alternate DNS address – Alternate domain name server address.
• Domain name – Domain name of the Intel Management Engine.

Provision Model

The following provisioning models are available:

• Compatibility Mode – Intel AMT 3.0** / Intel AMT 1.0
  Compatibility mode allows user to switch between Intel AMT 3.0 and Intel AMT 1.0.
• Provisioning Mode – Enterprise** / Small Business
  This allows you to select between small business and enterprise mode. Enterprise mode may have different security settings than small business mode. Because of the different security settings, each of these modes requires a different process to complete the setup and configuration process.

Setup and Configuration

The menu contains the parameters for the setup and configuration server. This menu also contains the security settings for PSK and PKI configurations.

• Current Provisioning Mode – Displays the current provisioning TLS Mode: None, PKI, or PSK. This configuration is only shown in Enterprise Provision Model.
• Provisioning Record – Displays the provision PSK/PKI record data of the computer. If the data has not been entered, the MEBx displays a message that states:
  Provision Record not present
  If the data is entered, the Provision Record displays the following:
  • TLS provisioning mode – Displays the current configuration mode of the computer: None, PSK or PKI.
  • Provisioning IP – The IP of the setup and configuration server.
  • Date of Provision – Displays the date and time of the provisioning in the format MM/DD/YYYY at HH:MM.
  • DNS – Displays if Secure DNS is being used or not. 0 indicates DNS is not in use, 1 indicates secure DNS is being used (PKI only).
  • Host Initiated – Displays if the setup and configuration process was initiated by the host: 'No' indicates the setup and configuration process was not host initiated; 'Yes' indicates the setup and configuration process was host initiated (PKI only).
  • Hash Data – Displays the 40 character certificate hash data (PKI only).
  • Hash Algorithm – Describes the hash type. Currently only SHA1 is supported (PKI only).
  • IsDefault – Displays 'Yes' if the Hash algorithm is the default algorithm selected. Displays 'No' if the hash algorithm is not the default algorithm used (PKI only).
  • FQDN – FQDN of the provisioning server mentioned in certificate (PKI only).
  • Serial Number – The 32 character that indicate the Certificate Authority serial numbers.
  • Time Validity Pass – Indicates whether the certificate passed the time validity check.
• Provisioning Server – The IP address and port number (0 – 65535) for an Intel AMT provisioning server. This configuration is only shown for the enterprise provision model. The default port number is 9971.
• TLS PSK – Contains the settings for TLS PSK configuration settings.
  • Set PID and PPS – Sets the provisioning identifier (PID) and provisioning passphrase (PPS). Enter the PID and PPS in the dash format. (Ex. PID: 1234-ABCD ; PPS: 1234-ABCD-1234-ABCD-1234-ABCD-1234-ABCD) NOTE - A PPS value of ' '0000-0000-0000-0000-0000-0000-0000-0000' does not change the setup configuration state. If this value is used the setup and configuration state stays as 'Not-started'.
  • Delete PID and PPS – Deletes the current PID and PPS stored in ME. If there is no PID and PPS entered, the MEBX returns an error message. Note: Using this option does NOT set the setup and configuration process parameter to "Not Started." This option sets the setup and configuration process parameter to "In Process."
  • Time Validity Pass – Indicates whether the certificate passed the time validity check.
• TLS PKI – Contains the settings for the TLS PKI configuration settings.
  • Remote Configuration Enable/Disable – Disables or enables remote configuration. If this option is not enabled, remote configuration cannot occur.
  • Manage Certificate Hashes – Displays the list of hashes that are currently stored and the current status. To change the active status of the certificate press the <+> key. To delete the hash press the <del> key. To add another key press the <ins> key.
  • Set FQDN – Sets the fully qualified domain name for the computer.
  • Set PKI DNS suffix – Sets the PKI DNS suffix.

TLS PSK

The submenu contains the settings for TLS PSK configuration settings. Setting or deleting the PID/PPS causes a partial un-provision if the setup and configuration is "In-process".

• Set PID and PPS – Sets the PID and PPS. Enter the PID and PPS in the dash format. (Ex. PID: 1234-ABCD ; PPS: 1234-ABCD-1234-ABCD-1234-ABCD-1234-ABCD) Note - A PPS value of '0000-0000-0000-0000-0000-0000-0000-0000' does not change the setup configuration state. If this value is used the setup and configuration state stays as "Not-started."
• Delete PID and PPS – Deletes the current PID and PPS stored in ME. If there is no PID and PPS entered, the MEBX returns an error message.

TLS PKI – Remote Configuration Settings

The remote configuration options are contained under the TLS PKI sub menu. There are four remote configuration items:

• Remote Configuration Enable/Disable
• Manage Certificate Hashes
• Set FQDN
• Set PKI DNS Suffix

Remote Configuration Enable/Disable

The selectable options are Enable and Disable. If Remote Configuration is disabled, the menu options underneath are still displayed, but are not be used until Remote Configuration is enabled.

This option cannot be modified once the setup and configuration process is in process. This parameter can only be modified while the computer is in the factory default or un-provisioned state.

Enabling/disabling remote configuration causes a partial un-provision if the setup and configuration is In-process.

Manage Certificate Hashes

Select the Manage Certificate Hashes option under the Remote Configuration menu to display the Manage Certificate Hashes menu. Four default hashes are available from the factory. Hashes can be deleted or added per customer needs.

The Manage Certificate Hash screen has several keyboard controls available to you to manage the hashes on the computer. The following keys are valid when in the Manage Certificate Hash menu:

• Escape key – Exits from the menu
• Insert key – Adds a customized certificate hash to the computer
• Delete key – Deletes the currently selected certificate hash from the computer
• <+> key – Changes the active state of the currently selected certificate hash
• Enter key – Displays the details of the currently selected certificate hash

Adding a Customized Hash

1. Press <Insert> in the Manage Certificate Hash screen. A text field is displayed requesting the hash name.
2. You must enter the hash name. The hash name must be a maximum of 32 characters. Upon pressing <Enter> you are prompted to enter the certificate hash value.
3. The certificate hash value is a 20 byte hexadecimal number. You must enter the hash data in the correct format or the message Invalid Hash Certificate Entered - Try Again is displayed. Upon pressing <Enter> you are asked about setting the active state of the hash.
4. This query allows for setting the active state of the customized hash.
   • Yes – The customized hash is be marked as active.
   • No (Default) – VA_Hash is be maintained within EPS.

Deleting a Hash

1. Press <Delete> in the Manage Certificate Hash screen to display the
   Delete this certificate hash? (Y/N)
   prompt.
2. This option allows deleting of the selected certificate hash.
   • Yes – MEBx shall send the message to FW to delete the selected hash.
   • No – MEBx shall not delete the selected hash and returns to the Remote Configuration.

Changing the Active State

Press the <+> key in the Manage Certificate Hash screen to display the

prompt. Answering yes to this question toggles the active state of the currently selected certificate hash. Setting a hash as active indicates that the hash is available to use when during PSK provisioning.

Viewing a Certificate Hash

Press <Enter> in the Manage Certificate Hash screen. The details of the selected certificate hash are displayed to include: the hash name, the certificate hash data, and the active and default states.

Set FQDN

When the Set FQDN option is selected under the Remote Configuration menu, you are prompted to enter the Fully Qualified Domain Name (FQDN) of the Provisioning Server.

Set PKI DNS Suffix

When the Set PKI DNS Suffix option is selected under the Remote Configuration menu, you are prompted to enter the PKI DNS Suffix of the Provisioning Server. The Key Value is maintained in EPS.

Un-provision

The Un-Provision option allows you to reset the Intel AMT configuration to factory defaults. There are three types of un-provision:

• Partial Un-provision – This option resets all of the Intel AMT settings to their default values but leaves the PID/PPS. The MEBx password remains untouched.
• Full Un-provision – This option resets all of the Intel AMT settings to their default values. If a PID/PPS value is present, both values are lost. The MEBx password remains untouched.
• CMOS clear – This un-provision option is not available in the MEBx. This option clears all values to their default values. If a PID/PPS is present, both values are lost. The MEBx password resets to the default value (admin). To invoke this option, you need to clear the CMOS (i.e. system board jumper)

VLAN

This option enables or disables VLAN support for Intel AMT. If VLAN support is enabled, the VLAN Tag (1-4094) must be configured.

SOL/IDE-R

• Username and Password – DISABLED** / ENABLED
  This option provides the user authentication for SOL/IDER session. If the Kerberos protocol is used, set this option to Disabled and set the user authentication through Kerberos. If Kerberos is not used, you have the choice to enable or disable user authentication on the SOL/IDER session.
• Serial-Over-LAN (SOL) – DISABLED** / ENABLED
  SOL allows the Intel AMT managed client console input/output to be redirected to the management server console.
• IDE Redirection (IDE-R) – DISABLED** / ENABLED
  IDE-R allows the Intel AMT managed client to be booted from remote disk images at the management console.

Secure Firmware Update

This option allows you to enable/disable secure firmware updates. Secure firmware update requires an administrator user name and password. If the administrator user name and password are not supplied, the firmware cannot be updated.

When the secure firmware update feature is enabled, you are able to update the firmware using the secure method. Secure firmware updates pass through the LMS driver.

Set PRTC

Enter PRTC in GMT (UTC) format (YYYY:MM:DD:HH:MM:SS). Valid date range is 1/1/2004 – 1/4/2021. Setting PRTC value is used for virtually maintaining PRTC during power off (G3) state. This configuration is only displayed for the Enterprise Provision Model.

Idle Timeout

Use this setting to define the ME WoL idle timeout. When this timer expires, the ME enters a low-power state. This timeout takes effect only when one of the ME WoL power policies is selected. Enter the value in minutes.

Intel AMT in DHCP Mode Settings Example

The table below shows a basic field settings example for the Intel AMT Configuration menu page to configure the computer in DHCP mode.

Intel AMT Configurations Example in DHCP Mode
Intel AMT Configuration Parameters	Values
Intel AMT Configuration	Select and press <Enter>.
Host Name	Example: IntelAMT This is the same as the operating system machine name.
TCP/IP	Set the parameters as follows: Enable Network interface Enable DHCP Mode Set a domain name (e.g., amt.intel.com)
Provision Model	Intel AMT 3.0 Mode Small Business
SOL/IDE-R	Enable SOL Enable IDE-R
Remote FW Update	Enabled

Save and exit MEBx and then boot the computer to the Microsoft® Windows® operating system.

Intel AMT in Static Mode Settings Example

The table below shows a basic field settings example for the Intel AMT Configuration menu page to configure the computer in static mode. The computer requires two MAC addresses (GBE MAC address and Manageability MAC Address) to operate in static mode. If there is no Manageability MAC address, Intel AMT cannot be set in static mode.

Intel AMT Configurations Example in Static Mode
Intel AMT Configuration Parameters	Values
Intel AMT Configuration	Select and press <Enter>
Host Name	Example: IntelAMT
TCP/IP	Set the parameters as follows: Enable Network interface Disable DHCP Mode Set an IP address (e.g., 192.168.0.15) Set a subnet mask (e.g., 255.255.255.0) The default gateway address is optional The preferred DNS address is optional The Alternate DNS address is optional Set the domain name (for example., amt.intel.com)
Provision Model	Intel AMT 3.0 Mode Small Business
SOL/IDE-R	Enable SOL Enable IDE-R
Remote FW Update	Enabled

Save and exit MEBx and then boot computer to the Microsoft® Windows® operating system.