auth sufficient pam_krb5.so auth required pam_unix.so use_first_pass use_authtok nullok account sufficient pam_krb5.so account required pam_unix.so use_first_pass use_authtok session required pam_mkhomedir.so session sufficient pam_krb5.so session required pam_unix.so use_first_pass use_authtok password sufficient pam_krb5.so password required pam_unix.so nullok