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How To Secure A Linux Server
An evolving guide to locking down a Linux server, with the reasoning explained.
Day 43 since launch · Launched 25 August 2026
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What is How To Secure A Linux Server?
How To Secure A Linux Server is a free, continuously updated guide that walks you through hardening a Linux server step by step. It covers picking a distribution, securing SSH with keys and 2FA, limiting sudo and su, sandboxing applications, firewalling and more, always explaining why each step matters. Ansible playbooks are included so you can automate the whole process.
Pros
- Explains the why behind every hardening step
- Ansible playbooks automate the full setup
- Free and actively maintained
Cons
- Linux-specific, not for macOS or Windows servers
- Assumes comfort with the terminal
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