How To Install telnetd on Ubuntu 20.04
Introduction
In this tutorial we learn how to install telnetd
on Ubuntu 20.04.
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 20.04. 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 20.04
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 20.04, 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 20.04 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 20.04 using different package management tools: apt
, apt-get
and aptitude
.