A VPN abbreviated as Virtual Private Network enables a private network to be extended across a public network. It allows users to send and receive data as if their computer equipment were physically linked to the private network. For example, suppose you need to connect to your workplace’s local network while on a business trip. You’d find an internet connection (maybe at a motel) and then connect to your company’s VPN. Although it looks like you are directly linked to the network at work, you are connected to the network via the hotel’s internet connection. VPN connections are normally encrypted to prevent unauthenticated users from accessing the local network to which you’re connected.
Methods to Setup a VPN on Ubuntu
There are two ways in which you can set up a VPN on your Ubuntu:
- Setup VPN Using Command Line Method
- Setup VPN Using GUI (Graphical User Interface) Method
A brief description of both approaches is detailed below:
Method 1: Setup VPN Using Command Line Method
The following are the steps involved in the installation and set-up of VPN in Ubuntu using the CLI method:
Step 1: Update System
To ensure that all your Ubuntu packages are up to date, update your operating system using the following command:
$ sudo apt update |
Then to upgrade your operating system, use the following command:
$ sudo apt upgrade |
Step 2: Check the IP Address
You can check your system’s IP address using the following command:
$ ip addr show |
Step 3: Installation of OpenVPN
You can install OpenVPN using the following command:
$ wget https:// git.io/vpn –O openvpn-ubuntu-install.sh |
Now we’ll use the “chmod” command to change the permissions on the script file:
$ chmod –v +x openvpn-ubuntu-install.sh |
Then, using the following mentioned script file, install OpenVPN:
$ sudo ./openvpn-ubuntu-install.sh |
Step 4: Check Connection
Run the following “Ping” command to ping the OpenVPN server:
$ ping –c 4 10.8.0.1 |
Step 5: Addition or removal of clients
By using the following mentioned script file, you can either add or remove clients or revoke existing clients:
$ sudo ./openvpn-ubuntu-install.sh |
Commands to start/stop/restart OpenVPN
Using the following mentioned command, you can start OpenVPN:
$ sudo systemctl start [email protected] |
Using the following mentioned command, you can stop OpenVPN:
$ sudo systemctl stop [email protected] |
Using the following command, you can restart OpenVPN:
$ sudo systemctl restart [email protected] |
Using the following mentioned command, you can display the status of OpenVPN:
$ sudo systemctl status [email protected] |
Method 2: Setup VPN Using GUI Method
The following are the steps involved in the installation and set-up of VPN in Ubuntu using the CLI method:
Step 1: Settings Icon
Open the Ubuntu Activities (depicted by a nine-dot symbol) in the left corner of the screen, then seek for and select the “Settings” option:
Step 2: Network Icon
After tapping the “settings” button, the Network Settings Menu will appear. Go to “Network” in the settings options. To add a new VPN connection, click the Add button at the bottom of the left-hand list of VPN interfaces.
Step 3: Choose a VPN
After clicking on the “+” option, select the type of VPN connection you have among the list of VPN connections. In my case, I’m choosing an OpenVPN connection:
Step 4: Add VPN
After selecting the VPN, add details about the VPN. Once you’ve completed filling out the VPN connection details, click Add:
You can see that after setting up the information, the connection is being added. All you have to do is turn it “on” to connect to the VPN. You may be required to enter a password before the connection is established. After entering the password, you will be able to connect to the VPN. Again, to remove the VPN, you can switch the button off.
Conclusion
This article provides a basic understanding of VPNs and how they work. This article also covers the two distinct methods for setting up VPN in Ubuntu Linux. These methods include command line and graphical user interface (GUI) approaches. In addition, the CL method includes several commands that can be used to set up a VPN in Ubuntu.
Karim Buzdar holds a degree in telecommunication engineering and holds several sysadmin certifications including CCNA RS, SCP, and ACE. As an IT engineer and technical author, he writes for various websites.
