Setting Console Security; Overview Of Secure Mode - Compaq AlphaServer DS20E Reference Manual

7.22 Setting Console Security

The SRM console firmware has console security features intended to
prevent unauthorized
parameters or otherwise tampering with the system from the console.
The security features include a secure mode and commands to set
console security.

7.22.1 Overview of Secure Mode

The SRM console has two modes, user mode and secure mode.
•
User mode allows you to use all SRM console commands. User mode is the
default mode.
•
Secure mode allows you to use only the boot and continue commands. The
boot command cannot take command-line parameters when the console is
in secure mode. The console boots the operating system using the
environment variables stored in NVRAM (boot_file, bootdef_dev,
boot_flags).
Secure Function Commands
•
The set password and set secure commands are used to set secure mode.
•
The clear password command is used to exit secure mode and return to
user mode. All the SRM console commands are available and the console is
no longer secure.
•
The login command turns off console security for the current console
session. Once you enter the login command in secure mode, you can enter
any SRM command as usual. However, the system automatically returns to
secure mode when you enter the boot or continue command or when you
reset the system.
NOTE: The security features work only if access to the system hardware is
denied to unauthorized personnel. Be sure the system is available only
to authorized personnel.
7-44 DS20E Reference Guide
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personnel from modifying the system