Enhancing X11 Application Security with LXC

This article provides a technical guide for isolating X11 applications like web browsers using LXC (Linux Containers) on Arch Linux to enhance security by preventing compromised applications from accessing the host system. It walks through installing LXC, configuring networking, creating unprivileged containers with ID mapping, and deploying applications like Firefox within isolated containers. The security benefit relies on mapping container IDs to unused host IDs, ensuring that even if a process escapes the container, it will have no meaningful permissions on the host system.