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Guide to the Secure Configuration of Oracle Linux 8

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Verify User Who Owns gshadow File

    To properly set the owner of /etc/gshadow, run the command:
    $ sudo chown root /etc/gshadow 
    Rule Medium Severity
  • Set Kernel Parameter to Increase Local Port Range

    To set the runtime status of the <code>net.ipv4.ip_local_port_range</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.i...
    Rule Medium Severity
  • Verify ufw Enabled

    The ufw service can be enabled with the following command:
    $ sudo systemctl enable ufw.service
    Rule Medium Severity
  • cvs_read_shadow SELinux Boolean

    default - Default SELinux boolean setting.
    on - SELinux boolean is enabled.
    off - SELinux boolean is disabled.
    Value
  • Configure Kernel to Rate Limit Sending of Duplicate TCP Acknowledgments

    Make sure that the system is configured to limit the maximal rate for sending duplicate acknowledgments in response to incoming TCP packets that ar...
    Rule Medium Severity

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