Re: Rejecting weak passwords

Andrew Dunstan escribió:
>
>
> Albe Laurenz wrote:
>> Dear hackers,
>>
>> I have been thinking about ways to have PostgreSQL reject
>> weak passwords.
>>
>> I think the standard recommendation is "use PAM and LDAP",
>> but that requires the user to change the password outside
>> of PostgreSQL. And who would want to setup and maintain an
>> LDAP server just for this?
>>
>> Since everybody has different ideas what is a good password,
>> there should be some way to configure that. I've looked at
>> how Oracle does it, and they simply let you write a
>> stored procedure that throws an exception if it doesn't
>> like the password.
>> Since users are on cluster level and functions live in
>> databases, that won't work in PostgreSQL.
>>
>> I have come up with an idea or two and like to hear your
>> opinion.
>>
>> 1) One could have a set of GUCs like min_password_length,
>>    min_password_nonchars and similar that everybody
>>    could configure. This is not extremely flexible though.
>> 2) Another idea would be a GUC that contains a regular
>>    expression that a password may *not* match.
>>    Perhaps that's too limiting too.
>> 3) I have also considered a GUC that points to a loadable
>>    module that performs the password check if set.
>>
>>
>>
>
> My vote is for #3, if anything.
>
> cheers
>
> andrew
>
You have to analyze all points before to do this. I vote too for the
third option, but you have to be clear that how do you ´ll check the
weakness of the password:
1- For example: the length should be greater that 6 char..
2- The password should be have  a combination fo numbers, letters and
others dots

Things like that you have to think very well, or to do a question to the
list asking which are the best options.

I think the same about the PAM and LDAP auth

Regards

--
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 ......for that reason.......I use PostgreSQL + Linux"

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