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XCCDF
Guide to the Secure Configuration of Ubuntu 20.04
System Settings
Account and Access Control
Protect Accounts by Restricting Password-Based Login
Restrict Root Logins
Direct root Logins Are Not Allowed
Direct root Logins Are Not Allowed
An XCCDF Rule
Details
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Direct root Logins Are Not Allowed
Medium Severity
Configure the operating system to prevent direct logins to the
root
account by performing the following operations:
$ sudo passwd -l root