Install the 'security' module:
'$ sudo yum install mod_security'
[yes/no]
'mod_security' provides an additional level of protection for the web server by
enabling the administrator to implement content access policies and filters at the
application layer.
oval:org.secpod.oval:def:30487
oval:org.secpod.oval:def:31210
SCAP Repo OVAL Definition
2015-11-13