Sandboxing Non-Trusted Apps in Linux Systems: A Comprehensive Guide

As more and more systems are using Linux, users must find ways to protect their systems from potentially harmful apps or software. One of the best ways to keep your system secure is through sandboxing non-trusted apps. In this article, we will discuss everything you need to know about how to sandbox non-trusted apps in Linux systems.

What is Sandboxing?

Sandboxing is the practice of isolating a particular application or software from other system resources while still allowing it to run. By doing this, the software can’t access other parts of the system. Sandboxing essentially creates a “sandbox” around the application so that it can’t interfere with other parts of the system, protecting the system from possible vulnerabilities and malware.

Why Should You Sandbox Non-Trusted Apps in Linux Systems?

Sandboxing is especially important for non-trusted applications. These are applications that come from unknown sources or developers, making them a potential threat to your system. Without sandboxing, non-trusted apps can access a range of system resources, including memory, storage, and network connections. A sandboxed application, on the other hand, can only access the specific resources that you specify, limiting the potential for harmful activities.

How to Sandbox Non-Trusted Apps in Linux Systems

There are various tools and methods for sandboxing non-trusted apps in Linux systems, including:


AppArmor is a security module built into the Linux kernel. It uses simple configuration files to define which files, directories, and network resources an application can access. With AppArmor, you can create a rule that specifies what the application can and can’t access, essentially sandboxing the application.


SELinux is another security module built into the Linux kernel. It operates similarly to AppArmor but uses a different mechanism. It provides a more granular control over the access rights of an application, making it ideal for sandboxing non-trusted apps.


Firejail is a sandboxing program that provides a secure environment for applications to run within. Firejail offers a straightforward interface and configuration files that allow users to specify which resources an application can access.

Qubes OS

Qubes OS is an operating system specifically designed for security purposes. It uses a virtualization-based approach to isolate applications from each other and the underlying operating system. Qubes OS essentially creates multiple sandboxes, allowing users to allocate resources to each sandbox. It’s an effective way to sandbox non-trusted apps, but it may require some technical expertise to set up.


Sandboxing non-trusted apps in Linux systems is essential to keeping your system secure. There are various tools and methods available for sandboxing applications, including AppArmor, SELinux, Firejail, and Qubes OS. Sandboxing may require some technical expertise, but it’s worth the extra effort to avoid potential security threats.

FAQs about Sandboxing Non-Trusted Apps in Linux Systems

What are non-trusted apps?

Non-trusted apps are applications that come from unknown sources or developers and may be harmful or contain malware.

Why is sandboxing important for non-trusted apps?

Sandboxing non-trusted apps is important because it limits the potential risks that these applications can pose to your system and its resources.

How can I sandbox non-trusted apps in Linux?

You can use tools like AppArmor, SELinux, Firejail, or Qubes OS to sandbox non-trusted apps in Linux. These tools provide a secure environment for applications to run within, limiting their access to specific system resources.



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Peter Graham
Peter Graham
Hi there! I'm Peter, a software engineer and tech enthusiast with over 10 years of experience in the field. I have a passion for sharing my knowledge and helping others understand the latest developments in the tech world. When I'm not coding, you can find me hiking or trying out the latest gadgets.


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