How to Harden Linux Server using Auditd, UFW & Fail2Ban?
Linux server hardening using CIS Benchmark, auditd, UFW firewall, fail2ban, and SSH key authentication for infrastructure security.
📚 What You'll Discover:
1. 00:00 - Introduction
2. 00:30 - Infrastructure Hardening
Understanding infrastructure vs endpoint security
Learning why monitoring servers are critical targets
Discovering enterprise server protection strategies
3. 02:30 - CIS Benchmark Setup
Understanding Ubuntu Linux benchmark download
Learning Level 2 security recommendations
Discovering server and desktop hardening alignment
4. 04:06 - auditd Configuration
Understanding advanced system auditing installation
Learning comprehensive audit rule deployment
Discovering forensic logging capabilities
5. 09:40 - UFW Deployment
Understanding host-based firewall configuration
Learning default-deny security posture
Discovering SSH access rule implementation
6. 12:12 - fail2ban Setup
Understanding automated intrusion prevention
Learning jail configuration for SSH protection
Discovering brute-force attack mitigation
7. 15:37 - SSH Hardening
Understanding cryptographic key generation
Learning password authentication disabling
Discovering SSH daemon security configuration
11. 22:29 - Conclusion
Understanding production-grade security achievement
Learning snapshot creation for lab preservation
Discovering next steps in defensive security
📁 RESOURCES
CDM Portfolio Repository:
- (https://github.com/TechSky-EH/cdm-por...)
CIS Benchmarks Download:
- (https://www.cisecurity.org/cis-benchm...)
Ubuntu Security Documentation:
- (https://ubuntu.com/security)
auditd Rules Examples:
- (https://github.com/Neo23x0/auditd)
fail2ban Documentation:
- (https://github.com/fail2ban/fail2ban)
🚀 Why This Matters:
Learn enterprise Linux infrastructure hardening
Understand auditd forensic logging deployment
Master fail2ban automated threat response
Build production-ready server security skills
🔗 Stay Tuned for More on Tech Sky:
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