Server Hardening Mastery
---
name: server-hardening-mastery
description: 'Production server hardening — SSH, fail2ban, UFW/iptables, auditd, kernel tuning, intrusion detection, and compliance'
version: 1.0.0
category: devops
tags: [security, hardening, ssh, fail2ban, firewal
System Design Mastery
Design scalable distributed systems using structured approaches — load balancing, caching, message queues, databases, and microservices