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4.2.4
The method of installing screen to enforce session timeouts, though convenient, is not necessarily best-practice. A similar effect can be had with setting the bash or login shell TMOUT variable and setting the variable as read-only.  E.g., readonly TMOUT  in the system-wide bash profile.

Hello, I rewrited the section 4.2.4 [1] to use the TMOUT variable and I consulted the solution with Martin Prpic. Thank you for reviewing.
[1] http://jenkinscat.gsslab.pnq.redhat.com:8080/job/doc-Red_Hat_Enterprise_Linux-7-Security_Guide%20%28html-single%29/lastStableBuild/artifact/tmp/en-US/html-single/index.html#sect-Security_Guide-Administrative_Controls-Enabling_Automatic_Logouts

Thanks Mirek. I only made some minor changes.

This bug will be closed when the doc goes live on the Customer Portal.

The solution is published on the Red Hat Customer Portal: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html-single/Security_Guide/index.html#sect-Security_Guide-Administrative_Controls-Enabling_Automatic_Logouts (closing the bug)