Linux Server Hardening Script

Overview

Born from the need to consistently secure new Linux server deployments. This script automates the essential hardening steps that are typically done manually — reducing setup time and ensuring no security step gets skipped.

Responsibilities

• Creates non-root users and disables root SSH access with enforced key-based authentication.
• Configures firewall rules and disables unnecessary protocols.
• Sets up Fail2Ban to block brute-force login attempts.
• Implements shared memory protection and hardens kernel parameters against common network exploits.

Technical Highlights

• Used in production to secure multiple Linux servers running SaaS and e-learning platforms.
• Automates security baseline that would take 30+ minutes manually.
• Reflects real-world server management experience, not theoretical knowledge.

Outcomes

• Delivered a complete devops tool experience that can be explored through the published project links.
• Created a project that demonstrates applied engineering work rather than only isolated technical experiments.