Will 'nullok' option allow users to login without entering a password?
Issue
I have a nullok entry in /etc/pam.d/system-auth file:
$ more /etc/pam.d/system-auth |grep nullok
auth sufficient pam_unix.so nullok try_first_pass
password sufficient pam_unix.so md5 remember=6 shadow nullok try_first_pass use_authtok
If an enabled account on the system is not password protected, then the users can login with no password. How do I fix this issue?
Environment
- Red Hat Enterprise Linux 4/5/6/7
- pam
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