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A comprehensive guide covering Linux server hardening techniques including SSH configuration with public/private keys and 2FA, user privilege management with sudo/su restrictions, firewall setup with UFW, intrusion detection with Fail2Ban and PSAD, security auditing with tools like Lynis and AIDE, NTP configuration, password policies, and automatic security updates. Covers practical implementation steps with code snippets for securing authentication, network access, and system monitoring.

imthenachoman/How-To-Secure-A-Linux-Server: An evolving how-to guide for securing a Linux server.

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