How to Set Up a Local DNS Resolver with Unbound on Rocky Linux 9

Introduction

Unbound is a validating, recursive, and caching DNS resolver. This guide will walk you through the process of setting up a local DNS resolver with Unbound on Rocky Linux 9.

Prerequisites

Before you begin, ensure you have:

1. A Rocky Linux 9 system
2. Root or sudo privileges

Step 1: Install Unbound

Update the package index and install Unbound:

sudo dnf update
sudo dnf install -y unbound

Step 2: Configure Unbound

Edit the Unbound configuration file:

sudo nano /etc/unbound/unbound.conf

Replace the contents with the following configuration:

server:
    interface: 127.0.0.1
    access-control: 127.0.0.0/8 allow
    verbosity: 1
    logfile: "/var/log/unbound.log"

Step 3: Start Unbound

Start the Unbound service:

sudo systemctl start unbound
sudo systemctl enable unbound

Step 4: Test Unbound

Use the dig command to test Unbound:

dig example.com @127.0.0.1

You should see DNS resolution results for example.com.

Conclusion

Congratulations! You have successfully set up a local DNS resolver with Unbound on Rocky Linux 9. You can now use Unbound to resolve DNS queries locally.