password required pam_cracklib.so retry=3 minlen=6 difok=3
Linux Password Security with pam_cracklib
Setting Minimum Password Length in PAM using cracklib
MilCom
Military Communications & Beyond – thanks to DARPANet
password required pam_cracklib.so retry=3 minlen=6 difok=3
Linux Password Security with pam_cracklib