IBM 6862 User Guide - Page 74

Enabling and disabling enhanced security

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If enhanced security is enabled and you have not set an administrator password, your computer will operate as if enhanced security were disabled. If enhanced security is enabled and you have set an administrator password, your computer will operate as follows: The contents of the security EEPROM (your administrator password and boot sequence) will be protected from failure of the battery and CMOS memory. The security EEPROM will be protected from unauthorized access because it locks after your computer is turned on and the system programs have completed their startup routine. Once it is locked, the security EEPROM cannot be read from or written to by any software application or system software until the computer is turned off and back on again. In a networking environment, this might prevent certain functions from being performed remotely on your computer. There is an extra measure of protection for the system programs in your computer. Normally, the entire contents of the system programs EEPROM is write protected with a soft lock. A soft lock allows the Remote Administration utility to function in a network environment. Enhanced security adds a hard lock. With a hard lock, when your computer is turned on and the system programs startup routine is completed, the Remote Administration update utility is locked and cannot be unlocked until the computer is turned off and back on again and the administrator password is entered. Note that, in a networking environment, this prevents the system programs in your computer from being updated remotely. Someone must be present at your computer to turn it on and off and enter the administrator password. A chassis-intrusion feature will alert you if the cover of your computer has been removed. This feature will work if your computer is on or off when the cover is removed. If the cover has been removed, a prompt for your administrator password will appear on the screen, and your computer will remain in a suspended state until your administrator password is entered. As with nonenhanced security, your configuration settings are protected. The settings cannot be changed in the Configuration/Setup Utility program until your administrator password is entered. This means that any changes in computer hardware that are detected by the system programs in your computer, such as removal of a memory DIMM, will generate a configuration error until the administrator password is entered. Enabling and disabling enhanced security: Enhanced security can be enabled or disabled only when you update the system programs in your computer. To enable or disable enhanced security: 56 Using Your Personal Computer

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If enhanced security is enabled and you have not set an administrator password,
your computer will operate as if enhanced security were disabled.
If enhanced security is enabled and you have set an administrator password, your
computer will operate as follows:
±
The contents of the security EEPROM (your administrator password and boot
sequence) will be protected from failure of the battery and CMOS memory.
±
The security EEPROM will be protected from unauthorized access because it
locks after your computer is turned on and the system programs have
completed their startup routine.
Once it is locked, the security EEPROM cannot
be read from or written to by any software application or system software until
the computer is turned off and back on again.
In a networking environment,
this might prevent certain functions from being performed remotely on your
computer.
There is an extra measure of protection for the system programs in your
computer.
Normally, the entire contents of the system programs EEPROM is
write protected with a
soft lock
.
A soft lock allows the Remote Administration
utility to function in a network environment.
Enhanced security adds a
hard
lock
.
With a hard lock, when your computer is turned on and the system
programs startup routine is completed, the Remote Administration update
utility is locked and cannot be unlocked until the computer is turned off and
back on again and the administrator password is entered.
Note that, in a
networking environment, this prevents the system programs in your computer
from being updated remotely.
Someone must be present at your computer to
turn it on and off and enter the administrator password.
±
A chassis-intrusion feature will alert you if the cover of your computer has been
removed.
This feature will work if your computer is on or off when the cover
is removed.
If the cover has been removed, a prompt for your administrator
password will appear on the screen, and your computer will remain in a
suspended state until your administrator password is entered.
±
As with nonenhanced security, your configuration settings are protected.
The
settings cannot be changed in the Configuration/Setup Utility program until
your administrator password is entered.
This means that any changes in
computer hardware that are detected by the system programs in your computer,
such as removal of a memory DIMM, will generate a configuration error until
the administrator password is entered.
Enabling and disabling enhanced security:
Enhanced security can be enabled
or disabled only when you update the system programs in your computer.
To enable or disable enhanced security:
56
Using Your Personal Computer