Restricted Characters for Passwords (QPWDLMTCHR)
The Restricted Characters for Passwords (QPWDLMTCHR) system value limits the use of certain characters in a password.
This value provides additional security by preventing users from using specific characters, such as vowels, in a password. Restricting vowels prevents users from forming actual words for their passwords.
The QPWDLMTCHR system value is not enforced when the password level (QPWDLVL) system value has a value of 2 or 3. The QPWDLMTCHR system value can be changed at QPWDLVL 2 or 3, but will not be enforced until QPWDLVL is changed to a value of 0 or 1.
- This system value is a restricted value. See Security system values for details on how to restrict changes to security system values and a complete list of the restricted system values.
- If the QPWDRULES system value specifies any value other than *PWDSYSVAL, this system value cannot be changed and its value will be ignored when new passwords are checked to see if they are formed correctly.
|*NONE||There are no restricted characters for passwords.|
|restricted-characters||Specify up to 10 restricted characters. The valid characters are A through Z, 0 through 9, and special characters pound (#), dollar ($), at (@), and underline (_).|
Recommended value: A, E, I, O, or U. You might also want to prevent special characters (#, $, and @) for compatibility with other systems.