the-practical-linux-hardening-guide

by trimstray

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Updated 8 months ago

About

A comprehensive, practical guide to hardening Linux systems using industry standards like OpenSCAP, CIS, and STIG for improved security and compliance.

This guide details creating a secure Linux production system. OpenSCAP (C2S/CIS, STIG).

Primary Use Case

This guide is designed for system administrators and security professionals who want to build secure Linux production environments by following practical, step-by-step hardening instructions. It is ideal for those seeking to align their systems with compliance frameworks such as CIS benchmarks and STIG while addressing both internal and external threats.

Key Features

Step-by-step Linux hardening instructions based on minimal RHEL7 and CentOS 7 installations
Incorporates industry standards including CIS, STIG, NIST, and PCI-DSS
Integration and usage guidance for OpenSCAP security automation tools
Coverage of both internal and external threat mitigation
Practical checklist-style approach for easy implementation
Includes commentary and best practices beyond standard compliance rules
Focus on Governance, Risk, and Compliance (GRC) in Linux environments

Security Frameworks

Defense Evasion

Initial Access

Persistence

Privilege Escalation

Reconnaissance

Usage Insights

Integrate the guide's hardening steps into automated configuration management tools (e.g., Ansible, Puppet) for scalable deployment.
Use OpenSCAP integration to automate compliance auditing in CI/CD pipelines, enabling continuous security validation.
Leverage the guide for purple team exercises by simulating attacks against hardened systems to validate defense effectiveness.
Combine with vulnerability scanning tools to prioritize hardening efforts based on discovered weaknesses.
Use the checklist approach to train junior sysadmins and security staff on practical Linux security best practices.

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Security Profile

Red Team30%

Blue Team90%

Purple Team70%

Details

LicenseMIT License

Open Issues13

Topics

linux

linux-hardening

linux-security