How To Install ntpsec on Ubuntu 22.04
Introduction
In this tutorial we learn how to install ntpsec on Ubuntu 22.04.
What is ntpsec
ntpsec is:
NTP, the Network Time Protocol, is used to keep computer clocks accurate by synchronizing them over the Internet or a local network, or by following an accurate hardware receiver that interprets GPS, DCF-77, or similar time signals.
This package contains the NTP daemon and utility programs. An NTP daemon needs to be running on each host that is to have its clock accuracy controlled by NTP. The same NTP daemon is also used to provide NTP service to other hosts.
This is the NTPsec version of NTP. NTPsec is a secure, hardened, and improved implementation derived from the original NTP project. NTPsec supports Network Time Security (NTS) which provides cryptographically authenticated time.
For more information about the NTP protocol and NTP server configuration and operation, install the package “ntpsec-doc”.
There are three methods to install ntpsec on Ubuntu 22.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install ntpsec Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install ntpsec using apt-get by running the following command:
sudo apt-get -y install ntpsec
Install ntpsec Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install ntpsec using apt by running the following command:
sudo apt -y install ntpsec
Install ntpsec 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 ntpsec using aptitude by running the following command:
sudo aptitude -y install ntpsec
How To Uninstall ntpsec on Ubuntu 22.04
To uninstall only the ntpsec package we can use the following command:
sudo apt-get remove ntpsec
Uninstall ntpsec And Its Dependencies
To uninstall ntpsec and its dependencies that are no longer needed by Ubuntu 22.04, we can use the command below:
sudo apt-get -y autoremove ntpsec
Remove ntpsec Configurations and Data
To remove ntpsec configuration and data from Ubuntu 22.04 we can use the following command:
sudo apt-get -y purge ntpsec
Remove ntpsec configuration, data, and all of its dependencies
We can use the following command to remove ntpsec configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ntpsec
References
Summary
In this tutorial we learn how to install ntpsec package on Ubuntu 22.04 using different package management tools: apt, apt-get and aptitude.
