Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 11-05-2007 Installation Manual page 192

Click Expert Options for advanced group management. Find more about these options
in Section 8.9.1, "User Management"
8.9.3 Local Security
To apply a set of security settings to your entire system, use Security and Users > Local
Security. These settings include security for booting, login, passwords, user creation,
and file permissions. SUSE Linux Enterprise offers three preconfigured security sets:
Home Workstation, Networked Workstation, and Network Server. Modify the defaults
with Details. To create your own scheme, use Custom Settings.
The detailed or custom settings include:
Password Settings
To have new passwords checked by the system for security before they are accepted,
click Check New Passwords and Test for Complicated Passwords. Set the minimum
password length for newly created users. Define the period for which the password
should be valid and how many days in advance an expiration alert should be issued
when the user logs in to the text console.
Boot Settings
Set how the key combination Ctrl + Alt + Del should be interpreted by selecting
the desired action. Normally, this combination, when entered in the text console,
causes the system to reboot. Do not modify this setting unless your machine or
server is publicly accessible and you are afraid someone could carry out this action
without authorization. If you select Stop, this key combination causes the system
to shut down. With Ignore, this key combination is ignored.
If you use the KDE login manager (KDM), set permissions for shutting down the
system in Shutdown Behavior of KDM. Give permission to Only root (the system
administrator), All Users, Nobody, or Local Users. If Nobody is selected, the system
can only be shut down from the text console.
Login Settings
Typically, following a failed login attempt, there is a waiting period lasting a few
seconds before another login is possible. This makes it more difficult for password
sniffers to log in. Optionally activate Record Successful Login Attempts. If you
suspect someone is trying to discover your password, check the entries in the system
log files in /var/log. To grant other users access to your graphical login screen
174 Installation and Administration
(page 167).