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pam_cracklib and Required dfferent kinds of characters



I have a requirement that each password MUST contain at least three of the 
four types of characters (other, upper, lower, and digit) and be greater than 
seven characters long.  This seems to be just what the pam_cracklib module is 
for.

The character length is easy with 'minlen=N' 

I see how to promote the use of character kinds with dcredit, ucredit, lcredit 
and ocredit.

But, how do I REQUIRE the use of at least one digit, one upper case, one lower 
case and/or one other type of character?

Should I be looking in a different module?

Any suggestions or pointers to documentation would be appreciated.

(This is for a Red Hat 7.2 system)

Thanks

Richard
rruth@computer.org






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