Is Gluetun Safe? A Security & Privacy Guide
Before you deploy it, it's fair to ask: is Gluetun safe? The short answer is yes — it's open source, widely audited by the community, and built specifically to prevent leaks. This guide explains how it protects you and how to configure it well.
Open Source & Transparent
Gluetun's code is public, so anyone can inspect exactly how it builds tunnels and firewall rules. The images are published to trusted registries, and you can pin a specific version for reproducible deployments.
How It Keeps You Protected
Security comes from a few layers working together:
- A firewall kill switch that blocks any non-VPN traffic.
- Strong, modern encryption via WireGuard or OpenVPN.
- Encrypted DNS so lookups never leak outside the tunnel.
Best practice: keep your VPN credentials in a secrets file or environment manager rather than committing them to a repository.
Reducing Your Attack Surface
Run Gluetun with only the capabilities it needs (NET_ADMIN), keep the image updated, and restrict the control API to your local network. These simple steps keep the deployment tight.
Bottom Line
Gluetun is a safe, transparent way to enforce VPN-only networking. Use official images, pin versions, and protect your keys. Read our beginner's guide next to get set up correctly.