Passwords that are easy to guess are a major security issue. The dialog provides the means to ensure that only secure passwords can be used.
By activating this option, a warning will be issued if new passwords appear in a dictionary, or if they are proper names (proper nouns).
When this option is checked, any new password is checked that it consists of a mixture of characters, digits and special characters. If it fails to pass this test, a warning is issued upon the entering of the new password.
When password expiration is activated, 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).
If the user chooses a password with a length shorter than specified here, a warning will be issued.
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.