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XCCDF
Guide to the Secure Configuration of Ubuntu 18.04
System Settings
Account and Access Control
Protect Accounts by Restricting Password-Based Login
Restrict Root Logins
Restrict Serial Port Root Logins
Restrict Serial Port Root Logins
An XCCDF Rule
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Restrict Serial Port Root Logins
Medium Severity
To restrict root logins on serial ports, ensure lines of this form do not appear in
/etc/securetty
:
ttyS0 ttyS1