Perception Point – System Hardening Guidelines for 2022: Critical Best Practices

US-CERT – Configuration and Change Management

University of California Berkeley – Secure Device Configuration Guideline

Center for Internet Security – Benchmarks

NIST SP 800-128 Guide for Security-Focused Configuration Management of Information Systems

SANS Whitepaper – Monitoring Baselines with Nagios

National Cyber Security Centre – 10 Steps to Cybersecurity

Center for Internet Security – Hardened Images