A step-by-step checklist to secure Red Hat Linux:
For Red Hat Linux 7 (CIS Red Hat Enterprise Linux 7 Benchmark version 2.2.0)
Want to skip most manual steps?
CIS Hardened Image available for Benchmark version 2.1.1
Provision on AWS Marketplace, AWS GovCloud, Google Cloud Platform and AWS Intelligence Community
Remediation Kit available for Benchmark version 2.1.0
CIS-CAT Pro is included with membership and can automatically test for compliance and remediate with this benchmark.