How To Install vpnc on Ubuntu 18.04
Introduction
In this tutorial we learn how to install vpnc on Ubuntu 18.04.
What is vpnc
vpnc is:
vpnc is a VPN client compatible with cisco3000 VPN Concentrator (also known as Cisco’s EasyVPN equipment). vpnc runs entirely in userspace and does not require kernel modules except for the tun driver to communicate with the network layer.
It supports most of the features needed to establish connection to the VPN concentrator: MD5 and SHA1 hashes, 3DES and AES ciphers, PFS and various IKE DH group settings.
There are three methods to install vpnc 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 vpnc Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install vpnc using apt-get by running the following command:
sudo apt-get -y install vpnc
Install vpnc Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install vpnc using apt by running the following command:
sudo apt -y install vpnc
Install vpnc 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 vpnc using aptitude by running the following command:
sudo aptitude -y install vpnc
How To Uninstall vpnc on Ubuntu 18.04
To uninstall only the vpnc package we can use the following command:
sudo apt-get remove vpnc
Uninstall vpnc And Its Dependencies
To uninstall vpnc and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove vpnc
Remove vpnc Configurations and Data
To remove vpnc configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge vpnc
Remove vpnc configuration, data, and all of its dependencies
We can use the following command to remove vpnc configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge vpnc
References
Summary
In this tutorial we learn how to install vpnc package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
