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Virtualization tutorial - IT technology blog

How to Install and Use gVisor to Secure Containers: Running Docker with an Isolated Kernel

By admin May 28, 2026

gVisor is a sandbox runtime for Docker that places a virtual kernel layer (Sentry) between the container and the host kernel to prevent container escape. This guide covers installing runsc, configuring Docker, and verifying the sandbox with practical command examples.

Ubuntu

Ubuntu Security: Using Firejail to Sandbox Applications and Prevent Data Theft

By admin May 17, 2026

Don't let a random GitHub script steal your SSH keys or passwords. Firejail allows you to easily sandbox Ubuntu applications, keeping your system secure and lightweight.

Fedora

Managing Flatpak Applications on Fedora: Installation, Sandboxing, and Storage Optimization

By admin March 4, 2026

Flatpak on Fedora is convenient, but it can silently consume tens of gigabytes of disk space if not managed properly. This guide covers installation, controlling sandbox permissions, and cleaning up unused runtimes to optimize real-world storage usage.