How to Harden Linux Servers with Systemd Sandboxing

In this episode of Linux Server Admin, Lucas and Luna dive into systemd's built-in sandboxing features—a powerful yet often overlooked way to harden Linux servers. They explore directives like ProtectSystem, ProtectHome, PrivateTmp, NoNewPrivileges, and more, showing how these can limit the damage a compromised service can do. Using a real-world example of a web server, they demonstrate how to apply these options step by step, discuss common pitfalls, and explain when sandboxing isn't enough. If you manage Linux servers, this episode gives you practical, actionable tips to strengthen your security posture without adding extra complexity. Tune in to learn how to make your services more resilient with a few simple lines in your unit files.

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