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Re: [ldapext] Re: Password Policy for LDAP Directories



Hi Niel,


Neil Dunbar wrote: <SNIP>
The pwdMaxAge should be the absolute maximum time that the password can
be used by anyone as a credential. The pwdExpirationWarning time, I
think, should be the earliest opportunity that the directory server can
warn the user that his/her password is approaching expiry. If the user
comes into the expiry period late in the game - tough. You can always
use the grace logins feature to allow the user with the dud password to
change it after it has ceased to be a meaningful credential for general
directory operations
</SNIP>


If someone was to implement the draft in its current form, their first warning time would indicate the time difference between the current time and the time that the password is due to expire. Subsequent logins would result in a warning time that will go beyond the specified pwdMaxAge allowing the user to receive their full warning period.


Our implementation, which was based around the -05 version of the draft handled this inconsistency by returning an initial warning message of pwdExpireWarning.

I've now noticed, in version -07 of the draft, that the following new line exists within the description of pwdExpireWarning:
If not 0, the value must be smaller than the value of the pwdMaxAge attribute.


This seriously implies that the author's intention is to ensure that the warning time does not exceed the maximum age of the password.

I'm not extremely passionate about whether a user should receive their full warning period. Some consensus on this issue, and the author's opinion (Jim?) would be good though.


Andrew Sciberras eB2Bcom - Software Engineer

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