Click this entry to toggle the status of the setting to either enabled or disabled.

Click this entry to launch another YaST module for configuration. You will return to the Security Overview when leaving the module.

A setting's status is set to unknown when the associated service is not installed. Such a setting does not represent a potential security risk.

A configuration for a workstation with any kind of network connection (including a connection to the Internet).

This setting is designed for a laptop or tablet that connects to different networks.

Security settings designed for a machine providing network services such as a Web server, file server, name server, etc. This set provides the most secure configuration of the predefined settings.

A pre-selected Custom Settings (when opening the Predefined Security Configurations dialog) indicates that one of the predefined sets has been modified. Actively choosing this option does not change the current configuration—you will need to change it using the Security Overview.

By activating this option, a warning will be issued if new passwords appear in a dictionary, or if they are proper names (proper nouns).

If the user chooses a password with a length shorter than specified here, a warning will be issued.

When password expiration is activated (via Password Age), this setting stores the given number of a user's previous passwords, preventing their reuse.

Choose a password encryption algorithm. Normally there is no need to change the default (Blowfish).

Activate password expiration by specifying a minimum and a maximum time limit (in days). By setting the minimum age to a value greater than 0 days, you can prevent users from immediately changing their passwords again (and in doing so circumventing the password expiration). Use the values 0 and 99999 to deactivate password expiration.

When a password expires, the user receives a warning in advance. Specify the number of days prior to the expiration date that the warning should be issued.

To make it difficult to guess a user's password by repeatedly logging in, it is recommended to delay the display of the login prompt that follows an incorrect login. Specify the value in seconds. Make sure that users who have mistyped their passwords do not need to wait too long.

When checked, the graphical login manager (GDM) can be accessed from the network. This is a potential security risk.

openSUSE Leap comes with three predefined sets of file permissions for system files. These permission sets define whether a regular user may read log files or start certain programs. Easy file permissions are suitable for stand-alone machines. These settings allow regular users to, for example, read most system files. See the file /etc/permissions.easy for the complete configuration. The Secure file permissions are designed for multiuser machines with network access. A thorough explanation of these settings can be found in /etc/permissions.secure. The Paranoid settings are the most restrictive ones and should be used with care. See /etc/permissions.paranoid for more information.

The program updatedb scans the system and creates a database of all file locations which can be queried with the command locate. When updatedb is run as user nobody, only world-readable files will be added to the database. When run as user root, almost all files (except the ones root is not allowed to read) will be added.

The magic SysRq key is a key combination that enables you to have some control over the system even when it has crashed. The complete documentation can be found at /usr/src/linux/Documentation/sysrq.txt (requires installation of the kernel-source package).