System values: Password overview
You can use IBM® i password system values to control the password values and password restrictions.
To access the password category of system values from IBM Navigator for i, select Configuration and Services and then select System Values.
IBM Navigator for i uses descriptive names for system values. The following table provides an overview of the password system values available in IBM Navigator for i (and their counterparts in the character-based interface).
| Name in IBM Navigator for i | Description of system value | Name in character-based interface |
|---|---|---|
| Minimum time between password changes | This system value sets the time period that changes to a password are blocked after the last successful password change operation. | QPWDCHGBLK |
| Password expiration | This system value specifies when a password expires. | QPWDEXPITV |
| Password expiration warning interval | This system value specifies how many days before a password expires to begin displaying password expiration warning messages on the Sign-on information display. | QPWDEXPWRN |
| Restrict consecutive digits | This system value requires to restrict consecutive digits in passwords. | QPWDLMTAJC |
| Restricted characters | This system value specifies the characters to be restricted. | QPWDLMTCHR |
| Restrict repeating characters | This system value specifies whether to restrict repeating characters. | QPWDLMTREP |
| Maximum password length | This system value sets the maximum length for a password. | QPWDMAXLEN |
| Minimum password length | This system value sets the minimum length for a password. | QPWDMINLEN |
| Password level | This system value sets the password level for the system. | QPWDLVL |
| Require a new character in each position | This system value requires that for each position in a new password, users should use a different character from the one in the same position in the previous password. | QPWDPOSDIF |
| Require at least one digit | This system value requires that passwords use at least one digit. | QPWDRQDDGT |
| Password reuse cycle | This system value specifies when a password can be used again. | QPWDRQDDIF |
| Password rules | This system value specifies a set of password rules that override other password system values when the system checks whether a password is formed correctly. | QPWDRULES |
| Password validation program | This system value specifies whether a user-written program does additional validation on passwords. | QPWDVLDPGM |