V-38494: The system must prevent the root account from logging in from serial consoles.
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Preventing direct root login to serial port interfaces helps ensure
accountability for actions taken on the systems using the root account.

Details: `V-38494 in STIG Viewer`_.

.. _V-38494 in STIG Viewer: https://www.stigviewer.com/stig/red_hat_enterprise_linux_6/2015-05-26/finding/V-38494

Notes for deployers
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.. include:: developer-notes/V-38494.rst