Application Isolation

Every Workload, Isolated and Verified

LIBUX provides multi-layered application isolation using namespaces, capabilities, mandatory access control, container sandboxing, and hardware-assisted MicroVMs.

Download LIBUXView Architecture

Isolation Stack

Application
Browser · Office · Email · Media · Developer Tools
Sandbox Layer
Flatpak · Bubblewrap · Firejail · seccomp-bpf
Container / MicroVM
Podman · Kata Containers · Firecracker · gVisor
Linux Namespaces
PID · Network · Mount · IPC · User · UTS
MAC & LSM
SELinux · AppArmor · Landlock · Capabilities
Kernel & Hardware
IOMMU · cgroups v2 · seccomp · TPM

Container Technologies

Podman

Rootless

Rootless, daemonless container engine. No root daemon attack surface.

containerd / CRI-O

K8s Ready

OCI-compliant container runtimes for Kubernetes workloads.

LXC / LXD

System

System containers for full OS-level isolation with minimal overhead.

systemd-nspawn

Lightweight

Lightweight namespaced containers integrated with systemd.

Linux Namespaces

LIBUX leverages all Linux kernel namespace types to provide complete process, network, filesystem, and user isolation for every containerized workload.

PID Namespace — Process isolation
Network Namespace — Network stack isolation
Mount Namespace — Filesystem view isolation
IPC Namespace — Inter-process communication
UTS Namespace — Hostname isolation
User Namespace — UID/GID remapping
Cgroup Namespace — Resource visibility
Time Namespace — Clock isolation

Sandboxing Technologies

Flatpak
Application sandboxing with portal-based access control for desktop apps.
Bubblewrap
Unprivileged sandboxing used by Flatpak and other tools.
Firejail
SUID sandbox for network isolation and filesystem restrictions.
Landlock LSM
Kernel-enforced filesystem access control for untrusted processes.
seccomp-bpf
System call filtering reduces kernel attack surface per process.
SELinux / AppArmor
Mandatory access control profiles for fine-grained permissions.

MicroVM Isolation

For workloads requiring the strongest isolation guarantees, LIBUX supports hardware-virtualized MicroVMs providing VM-level security with near-container performance.

Firecracker

AWS-developed microVM for serverless and container workloads. Minimal footprint, sub-second boot.

Kata Containers

OCI-compatible containers running inside lightweight VMs. Container UX, VM isolation.

gVisor

Google's application kernel providing a syscall interception sandbox. No kernel sharing.