How To Install dnssec-trigger on Ubuntu 18.04
Introduction
In this tutorial we learn how to install dnssec-trigger on Ubuntu 18.04.
What is dnssec-trigger
dnssec-trigger is:
Dnssec-trigger reconfigures the local unbound DNS server. This unbound DNS server performs DNSSEC validation, but dnssec-trigger will signal it to use the DHCP obtained forwarders if possible, and fallback to doing its own AUTH queries if that fails, and if that fails prompt the user via dnssec-trigger-applet the option to go with insecure DNS only.
There are three methods to install dnssec-trigger on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install dnssec-trigger Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install dnssec-trigger using apt-get by running the following command:
sudo apt-get -y install dnssec-trigger
Install dnssec-trigger Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install dnssec-trigger using apt by running the following command:
sudo apt -y install dnssec-trigger
Install dnssec-trigger 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 dnssec-trigger using aptitude by running the following command:
sudo aptitude -y install dnssec-trigger
How To Uninstall dnssec-trigger on Ubuntu 18.04
To uninstall only the dnssec-trigger package we can use the following command:
sudo apt-get remove dnssec-trigger
Uninstall dnssec-trigger And Its Dependencies
To uninstall dnssec-trigger and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove dnssec-trigger
Remove dnssec-trigger Configurations and Data
To remove dnssec-trigger configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge dnssec-trigger
Remove dnssec-trigger configuration, data, and all of its dependencies
We can use the following command to remove dnssec-trigger configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge dnssec-trigger
References
Summary
In this tutorial we learn how to install dnssec-trigger package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
