HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.1.x administrator guide (5697 - Page 65

• Sequence Specifies the length of sequential character sequences that will be disallowed. A sequential character sequence is defined as a character sequence in which the ASCII value of each contiguous character differs by one. The ASCII value for the characters in the sequence must all be increasing or decreasing. For example, if the "sequence" value is set to 3, a password "passABCword" is disallowed because it contains the sequence "ABC". A password of "passABword" would be allowed because it contains no sequential character sequence exceeding two characters. The range of allowed values is 1 - 40. The default value is 1. The following example shows a password strength policy that requires passwords to contain at least three uppercase characters, four lowercase characters and two numeric digits; the minimum length of the password is nine characters. passwdcfg --set -uppercase 3 -lowercase 4 -digits 2 -minlength 9 Setting the password history policy The password history policy prevents users from recycling recently used passwords, and is enforced across all user accounts when users are setting their own passwords. The password history policy is enforced only when a new password is defined. Specify the number of past password values that are disallowed when setting a new password. Allowable password history values range between 1 and 24. The default value is 2, which means the current password cannot be reused. The value 2 indicates that the current and the two previous passwords cannot be used (and so on, up to 24 passwords). This policy does not verify that a new password meets a minimal standard of difference from prior passwords, rather, it only determines whether or not a newly-specified password is identical to one of the specified number (1-24) of previously used passwords. The password history policy is not enforced when an administrator sets a password for another user; instead, the user's password history is preserved and the password set by the administrator is recorded in the user's password history. Setting the password expiration policy The password expiration policy forces expiration of a password after a configurable period of time, and is enforced across all user accounts. A warning that password expiration is approaching is displayed when the user logs in. When a user's password expires, he or she must change the password to complete the authentication process and open a user session. You can specify the number of days prior to password expiration during which warnings will commence. Password expiration does not disable or lock out the account. Use the following attributes to set the password expiration policy: • MinPasswordAge Specifies the minimum number of days that must elapse before a user can change a password. MinPasswordAge values range from 0 to 999. The default value is zero. Setting this parameter to a non-zero value discourages users from rapidly changing a password in order to circumvent the password history setting to select a recently-used password. The MinPasswordAge policy is not enforced when an administrator changes the password for another user. • MaxPasswordAge Specifies the maximum number of days that can elapse before a password must be changed, and is also known as the password expiration period. MaxPasswordAge values in range from 0 to 999. The default value is zero. Setting this parameter to zero disables password expiration. • Warning Specifies the number of days prior to password expiration that a warning about password expiration is displayed. Warning values range from 0 to 999. The default value is 0 days. When MaxPasswordAge is set to a non-zero value, MinPasswordAge and Warning must be set to a value that is less than or equal to MaxPasswordAge. Fabric OS 6.1.x administrator guide 65