How do I restrict root user to use password authentication while switching to normal user?
Issue
-
root user should not be able switch to users using
su - <username>without authentication. -
root user should be authenticated while switching to user using
su - <username>for specific users, while allowing password less authentication for specific users. -
How do I restrict root user to use password authentication while switching to normal user and allow root user to use passworless authentication while switching between users for certain users only ?
Environment
- Red Hat Enterprise Linux 6 and 7
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