in /etc/pam.d/common-password there is: password required pam_unix.so nullok obscure min=4 max=8 md5
reading /usr/share/doc/libpam-doc/txt/pam.txt.gz to find the definition of "obscure": Palindrome: Is the new password a palindrome of the old one? A palindrome is where the words read the same backwards and forwards (eg. madam and radar). Case Change Only: Is the new password the the old one with only a change of case? Similar: Is the new password too much like the old one? Simple: Is the new password too small? This is based on the length of the password and the number of different types of characters used (ie.alpha, numeric...). Rotated: Is the new password a rotated version of the old password (eg. "billy" and "illyb")? Does anyone know what is the exact definition of "similar"? Exactly how many characters must not be similar between the old and new passwords to satisfy this requirement? Does anyone know the exact definition of "simple"? From manual testing it appears that the password cannot be a dictionary word, but beyond that it can consist of all lower-case letters only. This does not seem to agree with the definition in the doc. Also its not clear why the definition mentions length of password since that is provided by the min= paramenter. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
