A step-by-step checklist to secure CentOS Linux:
For CentOS Linux 7 (CIS CentOS 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 Microsoft Azure
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.