How to Install OpenVPN on Ubuntu 22.04  ^[draft]

Prerequisites

An Ubuntu server 22.04
SSH root access or regular user with root privileges

Step 1. Log in to the Server

First, log in to your Ubuntu 22.04 VPS through SSH as the root user:

ssh root@IP_Address -p Port_number

Replace root with a user that has sudo privileges, and IP_Address and Port_number with your server’s IP address and SSH port number.

Verify you are on Ubuntu 22.04:

lsb_release -a 

Expected output:

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.1 LTS
Release: 22.04
Codename: jammy

Step 2. Update the System

Ensure all packages are up-to-date:

sudo bash -c "apt update & apt upgrade -y && apt autoremove -y"

Step 3. Install OpenVPN Server

Download the OpenVPN installation script from GitHub:

cd /opt

wget https://raw.githubusercontent.com/Nyr/openvpn-install/master/openvpn-install.sh -O openvpn-install.sh

Make the script executable and run it:

chmod +x openvpn-install.sh

./openvpn-install.sh

During the installation, you will be prompted with several questions:

Welcome to this OpenVPN road warrior installer!

This server is behind NAT. What is the public IPv4 address or hostname?
Public IPv4 address / hostname [you.ip.add.res]:

Choose the protocol (UDP is recommended):

 Which protocol should OpenVPN use?

 1) UDP (recommended)
 2) TCP
    Protocol [1]: 1

Select the port (default is 1194):

 What port should OpenVPN listen to?
    Port [1194]:

Choose a DNS server:

 Select a DNS server for the clients:
 1) Current system resolvers
 2) Google
 1) 1.1.1.1
 2) OpenDNS
 3) Quad9
 4) AdGuard
    DNS server [1]:

Enter a name for the first client:

 Enter a name for the first client:
    Name [client]: userone

Start the installation:

 Press any key to continue...

The script will install the OpenVPN server, generate a certificate, create the VPN user specified, and configure the firewall. The OpenVPN configuration file can be found at /etc/openvpn/server/server.conf.

Finished!

The client configuration is available in: /root/client.ovpn
New clients can be added by running this script again.

You can check the OpenVPN service status with:

systemctl status openvpn-server@server.service

This summarizes the process of setting up OpenVPN on an Ubuntu 22.04 server using a bash script.

Useful links: