Users, groups, and passwords

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You can manage AIX® users and groups.

Automatic home directory creation at login
The AIX operating system can automatically create a home directory at user login.
Account ID
Each user account has a numeric ID which uniquely identifies the account. The AIX operating system grants authorization according to Account ID.
Root account
The root account has virtually unlimited access to all programs, files, and resources on a system.
User accounts
There are several security administrative tasks for user accounts.
Anonymous FTP with a secure user account setup
You can set up anonymous FTP with a secure user account.
System special user accounts
AIX provides a default set of system special user accounts that prevents the root and system accounts from owning all operating system files and file systems.
Domainless groups
The domainless groups feature allows you to assign users that are defined in one domain to groups that are defined in another domain. This feature supports only Lightweight Database Access Protocol (LDAP) and local domains.
Passwords
Guessing passwords is one of the most common attack methods that a system experiences. Therefore, controlling and monitoring your password-restriction policy is essential.
User authentication
Identification and authentication are used to establish a user's identity.
User and Group attributes supported by the Authentication Load Modules
A set of user-related and group-related attributes are used to achieve identification and authentication in AIX.
Disk quota system overview
The disk quota system allows system administrators to control the number of files and data blocks that can be allocated to users or groups.
Number of Groups allowed
You can configure and retrieve the Number of Groups allowed value for AIX 7.1. It defines the Number of Groups that users can be members of.

Parent topic: Securing the base operating system