Open System Services Management and Operations Guide (G06.29+, H06.07+)

Managing Security
Open System Services Management and Operations Guide—527191-005
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User and User-Group Attributes
quote OSS or quote GUARDIAN command to gain access to the other
environment.
User and User-Group Attributes
All NonStop operating system users can use either the Guardian environment or the
OSS environment. However, additional attributes should be configured for OSS
environment users.
In the Guardian environment as well as the OSS environment, users and user groups
can have the following attributes:
•
A user definition can belong to up to 32 user groups.
°
An administrative user group has a group number in the range 0 through 255.
°
A file-sharing user group has a group number in the range 0 through 65535.
°
A user definition can have a primary user group that is different from its
administrative user group.
•
Each user definition has both a user name and a user ID.
°
A user name (sometimes called a logon name) has the form
group-name.member-name.
°
A user definition has a user ID that is unique within the NonStop node. The
user ID is usually represented:
•
In the Guardian environment as the structured value pair group-number,
member-number.
The NonStop operating system predefines the user ID of the super ID as
(255,255).
•
In the OSS environment as a unique scalar value in the range 0 through
65535 called the UID.
The UID is equal to member-number + (256 * group-number).
The NonStop operating system predefines the UID of the super ID as
65535.
The UID value 65535 always has appropriate privileges in the OSS
environment.
•
A user definition can have aliases up to 32 characters long that can be used for
login to the system. An alias is created using the SAFECOM ADD ALIAS
command and can have different attributes (other than the UID) from those of the
underlying user definition.
•
User groups can exist independently of user definitions. Therefore:
°
A user group can be created before any users are added to it.