As a technologist, I believe Linux is the best operating system for kids. It is not the easiest choice and your kids will likely complain that it looks different from what their friends use. However, the security and control advantages make it well worth the effort. I have implemented this approach for my own children, starting when my oldest was five years old.

Why Linux for Kids?

Linux is a lot easier to lock down than its counterparts (Windows and Mac). It represents a smaller target for malware developers, which means fewer threats to worry about. Linux also offers unparalleled environmental control — you can modify every setting, restrict applications, and configure content filtering more easily than on alternative systems.

Device Compatibility

Unlike recent macOS and Windows versions that require substantial computing power, Linux maintains its core principles and allows operation on a wide range of devices. From older computers to modern appliances, Linux can run efficiently on almost anything. This interoperability makes it practical for repurposing legacy hardware as a dedicated kids' computer.

Linux Distributions for Kids

Ubuntu is one of the most popular Linux distributions. It offers a familiar app-based interface resembling Windows or macOS, providing access to comparable applications that make the transition easier for new users.

Xubuntu is my personal recommendation. It is a Ubuntu derivative featuring a lightweight desktop environment called XFCE. Xubuntu loads cleaner with minimal preinstalled applications, allowing you to start from a blank slate and install only the software your child actually needs.

Installation Steps

• Download Xubuntu or Ubuntu onto a USB drive.
• Boot the computer using the USB drive and select the installation option.
• Once installation is complete, create a limited user account for your child without administrative permissions.
• Access user management through Settings > Users and Groups.

Configuring Content Filtering

Using the terminal application, you can implement DNS-based content filtering. This approach routes all DNS queries through a filtering service that blocks inappropriate content.

To set the DNS resolver, run:

To lock the DNS configuration and prevent changes:

This prevents DNS modifications without administrative permission. You can also restrict browser installation and system changes for additional security, though these basic steps address most parental control needs.

CleanBrowsing for Content Filtering

CleanBrowsing provides a cost-effective DNS-based content filtering service that blocks access to unwanted content like malicious sites and online pornography. It offers both free and paid solutions with various configuration options, making it a great complement to a locked-down Linux setup.

Conclusion

If you are a parent looking to provide your children with the right online tools while maintaining the necessary safety guardrails, Linux is a viable and powerful solution. The combination of Linux's inherent security advantages and DNS-based content filtering creates a safe computing environment that gives you control without sacrificing functionality.