How To Install unbound on Ubuntu

Posted on April 1, 2023 (Last modified on May 20, 2023 )

2 minutes • 393 words

Introduction

In this tutorial we learn how to install unbound on Ubuntu.

What is `unbound`

unbound is:

Unbound is a recursive-only caching DNS server which can perform DNSSEC validation of results. It implements only a minimal amount of authoritative service to prevent leakage to the root nameservers: forward lookups for localhost, reverse for 127.0.0.1 and ::1, and NXDOMAIN for zones served by AS112. Stub and forward zones are supported.

This package contains the unbound daemon.

There are three methods to install unbound on Ubuntu. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install unbound Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install unbound using apt-get by running the following command:

sudo apt-get -y install unbound

Install unbound Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install unbound using apt by running the following command:

sudo apt -y install unbound

Install unbound Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install unbound using aptitude by running the following command:

sudo aptitude -y install unbound

How To Uninstall unbound on Ubuntu

To uninstall only the unbound package we can use the following command:

sudo apt-get remove unbound

Uninstall unbound And Its Dependencies

To uninstall unbound and its dependencies that are no longer needed by Ubuntu, we can use the command below:

sudo apt-get -y autoremove unbound

Remove unbound Configurations and Data

To remove unbound configuration and data from Ubuntu we can use the following command:

sudo apt-get -y purge unbound

Remove unbound configuration, data, and all of its dependencies

We can use the following command to remove unbound configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge unbound

Dependencies

unbound have the following dependencies:

References

unbound website

Summary

In this tutorial we learn how to install unbound package on Ubuntu using different package management tools: apt, apt-get and aptitude.