How To Install telnetd on Ubuntu 18.04
Introduction
In this tutorial we learn how to install telnetd on Ubuntu 18.04.
What is telnetd
telnetd is:
The in.telnetd program is a server which supports the DARPA telnet interactive communication protocol.
This legacy server should in general be abandoned in favour of a contemporary ssh-server, as this implementation only is able to process password and user name in clear text. Other variants, like telnetd-ssl and a selection of Kerberized TELNET servers, are able to improve on this by providing secure forms of authentication and encryption.
There are three methods to install telnetd 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 telnetd Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install telnetd using apt-get by running the following command:
sudo apt-get -y install telnetd
Install telnetd Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install telnetd using apt by running the following command:
sudo apt -y install telnetd
Install telnetd 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 telnetd using aptitude by running the following command:
sudo aptitude -y install telnetd
How To Uninstall telnetd on Ubuntu 18.04
To uninstall only the telnetd package we can use the following command:
sudo apt-get remove telnetd
Uninstall telnetd And Its Dependencies
To uninstall telnetd and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove telnetd
Remove telnetd Configurations and Data
To remove telnetd configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge telnetd
Remove telnetd configuration, data, and all of its dependencies
We can use the following command to remove telnetd configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge telnetd
References
Summary
In this tutorial we learn how to install telnetd package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
