-
Table of Contents
- Introduction
- Introduction to Ubuntu 20.04 Server and VPN Server setup
- Step-by-step guide to installing Ubuntu 20.04 Server
- Configuring network settings for VPN Server on Ubuntu 20.04
- Setting up OpenVPN on Ubuntu 20.04 Server
- Securing your VPN Server on Ubuntu 20.04
- Troubleshooting common issues during VPN Server setup on Ubuntu 20.04
- Best practices for managing and maintaining your Ubuntu 20.04 VPN Server
- Conclusion
“Transform your Linux Ubuntu 20.04 Server into a secure VPN powerhouse with our step-by-step installation and configuration guide.”
Introduction
In this guide, we will discuss how to install and configure your Linux Ubuntu 20.04 Server as your own VPN (Virtual Private Network) server. By setting up your own VPN server, you can ensure secure and private communication over the internet, allowing you to access your network resources remotely and protect your data from potential threats. Let’s dive into the installation and configuration process.
Introduction to Ubuntu 20.04 Server and VPN Server setup
Ubuntu 20.04 Server is a popular choice for individuals and businesses looking to set up their own VPN server. With its robust security features and user-friendly interface, Ubuntu 20.04 Server provides a reliable and efficient platform for hosting a VPN server. In this article, we will guide you through the process of installing and configuring your Ubuntu 20.04 Server as your own VPN server.
Before we dive into the installation and configuration process, let’s briefly discuss what a VPN server is and why you might want to set one up. A VPN, or Virtual Private Network, allows you to create a secure connection to another network over the internet. This can be useful for a variety of reasons, such as accessing your home network remotely or encrypting your internet traffic when using public Wi-Fi.
To get started, you will need a fresh installation of Ubuntu 20.04 Server. If you haven’t already installed it, you can download the ISO file from the official Ubuntu website and follow the installation instructions. Once you have your server up and running, you can begin the process of setting up your VPN server.
The first step is to update your system and install the necessary packages. Open a terminal and run the following commands:
“`
sudo apt update
sudo apt upgrade
sudo apt install openvpn easy-rsa
“`
These commands will update your system, upgrade any installed packages, and install the OpenVPN software and the Easy-RSA package, which is used for managing the server’s certificates.
Next, you will need to generate the necessary certificates and keys for your VPN server. Easy-RSA provides a set of scripts that simplify this process. Navigate to the Easy-RSA directory by running the following command:
“`
cd /usr/share/easy-rsa
“`
Once you are in the Easy-RSA directory, run the following command to initialize the necessary files:
“`
sudo ./easyrsa init-pki
“`
This command will create a new directory called “pki” that contains the necessary files for generating certificates and keys. To generate the server’s certificate and key, run the following command:
“`
sudo ./easyrsa build-server-full server nopass
“`
This command will generate the server’s certificate and key without a passphrase. You can replace “server” with any name you prefer. Once the command completes, the server’s certificate and key will be stored in the “pki” directory.
Now that you have the necessary certificates and keys, you can proceed to configure the OpenVPN server. Open the OpenVPN server configuration file by running the following command:
“`
sudo nano /etc/openvpn/server.conf
“`
This command will open the configuration file in the Nano text editor. Scroll down to the “TLS Authentication” section and uncomment the line that starts with “tls-auth”. Save the file and exit the text editor.
Finally, start and enable the OpenVPN service by running the following commands:
“`
sudo systemctl start openvpn@server
sudo systemctl enable openvpn@server
“`
These commands will start the OpenVPN service and configure it to start automatically at boot.
Congratulations! You have successfully installed and configured your Ubuntu 20.04 Server as your own VPN server. You can now connect to your VPN server using an OpenVPN client and enjoy a secure and private internet connection.
In conclusion, Ubuntu 20.04 Server provides a reliable and user-friendly platform for hosting your own VPN server. By following the steps outlined in this article, you can easily install and configure your VPN server, allowing you to enjoy the benefits of a secure and private internet connection. So why wait? Start setting up your own VPN server today and take control of your online privacy and security.
Step-by-step guide to installing Ubuntu 20.04 Server
Are you looking to set up your own VPN server using Linux Ubuntu 20.04 Server? Well, you’re in luck! In this step-by-step guide, we will walk you through the process of installing and configuring your very own VPN server.
First things first, you’ll need to have a Linux Ubuntu 20.04 Server up and running. If you haven’t installed it yet, don’t worry, we’ll guide you through that process as well.
To begin, you’ll need to download the Ubuntu 20.04 Server ISO file from the official Ubuntu website. Once you have the ISO file, you can create a bootable USB drive using tools like Rufus or Etcher. Make sure to select the correct ISO file and follow the instructions provided by the tool.
Once you have your bootable USB drive ready, insert it into the computer where you want to install Ubuntu 20.04 Server. Restart the computer and boot from the USB drive. You may need to change the boot order in your computer’s BIOS settings to prioritize the USB drive.
After booting from the USB drive, you’ll be presented with the Ubuntu installation menu. Select the “Install Ubuntu Server” option and follow the on-screen instructions. You’ll need to choose your language, keyboard layout, and other basic settings.
Next, you’ll be prompted to configure the network. Make sure to connect your computer to the internet, as you’ll need it for the installation process. Choose the appropriate network interface and select whether you want to configure it manually or use DHCP.
Once the network configuration is complete, the installer will ask you to set up a hostname for your server. Choose a name that is easy to remember and identify.
Now it’s time to partition your hard drive. You can choose to use the entire disk or manually partition it according to your needs. If you’re not sure, you can select the guided option, which will automatically partition the disk for you.
After partitioning, the installer will ask you to create a user account and set a password. Make sure to choose a strong password to ensure the security of your server.
Once the installation is complete, remove the USB drive and reboot your computer. You should now have a fresh installation of Ubuntu 20.04 Server.
Now that you have Ubuntu 20.04 Server installed, it’s time to configure it as your VPN server. Open a terminal and update the system by running the following command:
sudo apt update && sudo apt upgrade
Once the system is up to date, install the necessary packages for setting up the VPN server by running the following command:
sudo apt install openvpn easy-rsa
During the installation, you’ll be prompted to confirm the installation of the packages. Press “Y” and hit Enter to proceed.
After the installation is complete, navigate to the Easy-RSA directory by running the following command:
cd /usr/share/easy-rsa
Now, initialize the PKI (Public Key Infrastructure) by running the following command:
sudo ./easyrsa init-pki
You’ll be prompted to enter a passphrase for the PKI. Choose a strong passphrase and remember it, as you’ll need it later.
Next, build the Certificate Authority (CA) by running the following command:
sudo ./easyrsa build-ca
During this process, you’ll be asked to provide some information, such as the Common Name (CN) for your CA. You can leave the default values or customize them according to your preferences.
Once the CA is built, generate the server certificate and key by running the following command:
sudo ./easyrsa gen-req server nopass
Again, you’ll be prompted to provide some information, such as the Common Name (CN) for your server. Make sure to enter the correct information.
After generating the server certificate and key, sign the certificate by running the following command:
sudo ./easyrsa sign-req server server
You’ll be asked to confirm the signing of the certificate. Press “Y” and hit Enter to proceed.
Finally, generate the Diffie-Hellman (DH) parameters by running the following command:
sudo ./easyrsa gen-dh
This process may take some time, so be patient.
Congratulations! You have successfully installed and configured your Linux Ubuntu 20.04 Server as your own VPN server. Now you can connect to your server using OpenVPN clients and enjoy a secure and private internet connection.
Remember to keep your server up to date with security patches and regularly monitor its performance to ensure optimal functionality. Happy VPN-ing!
Configuring network settings for VPN Server on Ubuntu 20.04
Configuring network settings for VPN Server on Ubuntu 20.04
Now that you have successfully installed Ubuntu 20.04 Server on your machine, it’s time to configure the network settings to set up your very own VPN server. This will allow you to securely connect to your server from anywhere in the world and access your files and services remotely.
First, you need to assign a static IP address to your server. This ensures that the IP address remains the same even after a reboot. To do this, open the terminal and enter the following command:
“`
sudo nano /etc/netplan/00-installer-config.yaml
“`
This will open the Netplan configuration file in the Nano text editor. Look for the line that says “dhcp4: true” and change it to “dhcp4: no”. Then, add the following lines below it:
“`
addresses: [your_server_ip/24]
gateway4: your_gateway_ip
nameservers:
addresses: [your_dns_server_ip]
“`
Replace “your_server_ip” with the desired IP address for your server, “your_gateway_ip” with the IP address of your router’s gateway, and “your_dns_server_ip” with the IP address of your DNS server. Once you have made the changes, press Ctrl+O to save the file and Ctrl+X to exit Nano.
Next, apply the changes by running the following command:
“`
sudo netplan apply
“`
This will update the network configuration with the new settings. You can verify the changes by running the following command:
“`
ip a
“`
You should see your server’s IP address listed under the network interface you configured.
Now, it’s time to enable IP forwarding on your server. This allows your server to act as a router and forward traffic between different networks. Open the sysctl.conf file by running the following command:
“`
sudo nano /etc/sysctl.conf
“`
Look for the line that says “net.ipv4.ip_forward=1” and uncomment it by removing the “#” symbol at the beginning of the line. Save the file and exit Nano.
To apply the changes, run the following command:
“`
sudo sysctl -p
“`
With IP forwarding enabled, your server is now ready to act as a VPN server. However, before proceeding, make sure that your router is configured to forward VPN traffic to your server’s IP address. Consult your router’s documentation for instructions on how to set up port forwarding.
Now, it’s time to install and configure the VPN server software. Open the terminal and enter the following command to install OpenVPN:
“`
sudo apt-get install openvpn
“`
Once the installation is complete, navigate to the OpenVPN directory by running the following command:
“`
cd /etc/openvpn
“`
Here, you will find the necessary configuration files. To generate the server’s private key and certificate, run the following command:
“`
sudo ./easyrsa init-pki
sudo ./easyrsa build-ca
sudo ./easyrsa gen-req server nopass
sudo ./easyrsa sign-req server server
“`
Next, generate the Diffie-Hellman key exchange file by running the following command:
“`
sudo ./easyrsa gen-dh
“`
Finally, generate the HMAC signature to strengthen the server’s TLS integrity verification by running the following command:
“`
openvpn –genkey –secret ta.key
“`
With the necessary files generated, it’s time to create the server configuration file. Run the following command to open the template file in the Nano text editor:
“`
sudo nano /etc/openvpn/server.conf
“`
Here, you can customize the server settings to your liking. Make sure to uncomment the lines that specify the server’s IP address and port, as well as the paths to the generated files. Save the file and exit Nano.
To start the VPN server, run the following command:
“`
sudo systemctl start openvpn@server
“`
You can check the status of the server by running the following command:
“`
sudo systemctl status openvpn@server
“`
If everything is configured correctly, you should see that the server is active and running.
Congratulations! You have successfully configured your Ubuntu 20.04 Server as your own VPN server. You can now connect to your server remotely and enjoy secure access to your files and services from anywhere in the world.
Setting up OpenVPN on Ubuntu 20.04 Server
Setting up OpenVPN on Ubuntu 20.04 Server
If you’re looking to enhance your online security and privacy, setting up your own VPN server is a great option. With a VPN server, you can encrypt your internet traffic and route it through a secure connection, making it difficult for anyone to intercept or monitor your online activities. In this article, we’ll guide you through the process of installing and configuring OpenVPN on your Ubuntu 20.04 Server.
Firstly, you’ll need to ensure that your Ubuntu 20.04 Server is up to date. Open a terminal and run the following command: “sudo apt update && sudo apt upgrade”. This will update your system with the latest security patches and software updates.
Once your system is up to date, you can proceed with installing OpenVPN. In the terminal, type “sudo apt install openvpn” and press Enter. This command will download and install the OpenVPN package on your server.
After the installation is complete, you’ll need to generate the necessary certificates and keys for OpenVPN. Open a terminal and navigate to the Easy-RSA directory by typing “cd /usr/share/easy-rsa”. Once you’re in the directory, run the command “sudo ./easyrsa init-pki” to initialize the Public Key Infrastructure (PKI).
Next, you’ll need to generate a Certificate Authority (CA) certificate. Run the command “sudo ./easyrsa build-ca” and follow the prompts to enter the necessary information. This will create a CA certificate that will be used to sign the server and client certificates.
Now it’s time to generate the server certificate and key. Run the command “sudo ./easyrsa gen-req server nopass” to generate a certificate request for the server. Follow the prompts to enter the required information. Once the request is generated, run the command “sudo ./easyrsa sign-req server server” to sign the certificate.
With the server certificate and key generated, you can now create the Diffie-Hellman (DH) parameters. Run the command “sudo ./easyrsa gen-dh” to generate the parameters. This may take some time, as it involves complex calculations.
Once the DH parameters are generated, you’ll need to copy the necessary files to the OpenVPN directory. Run the following commands one by one: “sudo cp pki/ca.crt /etc/openvpn/”, “sudo cp pki/issued/server.crt /etc/openvpn/”, “sudo cp pki/private/server.key /etc/openvpn/”, and “sudo cp pki/dh.pem /etc/openvpn/”. These commands will copy the CA certificate, server certificate, server key, and DH parameters to the OpenVPN directory.
Now that the necessary files are in place, you can proceed with configuring OpenVPN. Open the server configuration file by typing “sudo nano /etc/openvpn/server.conf” in the terminal. In this file, you can specify various settings such as the VPN subnet, DNS servers, and encryption algorithms. Customize these settings according to your preferences.
Once you’ve made the necessary changes, save the file and exit the text editor. Now, start the OpenVPN service by running the command “sudo systemctl start openvpn@server”. To ensure that the service starts automatically on system boot, run the command “sudo systemctl enable openvpn@server”.
Congratulations! You’ve successfully installed and configured OpenVPN on your Ubuntu 20.04 Server. You can now connect to your VPN server using OpenVPN client software on your devices. Remember to download the client configuration file from your server and import it into the client software.
In conclusion, setting up your own VPN server using OpenVPN on Ubuntu 20.04 Server is a straightforward process. By following the steps outlined in this article, you can enhance your online security and privacy, ensuring that your internet traffic remains encrypted and secure.
Securing your VPN Server on Ubuntu 20.04
So, you’ve decided to set up your own VPN server on your Linux Ubuntu 20.04 server. That’s a great choice! Having your own VPN server gives you complete control over your online privacy and security. In this article, we’ll guide you through the process of installing and configuring your Ubuntu 20.04 server as your very own VPN server.
First things first, make sure you have a fresh installation of Ubuntu 20.04 on your server. It’s always a good idea to start with a clean slate. Once you have that ready, let’s dive into the installation process.
The first step is to update your server’s packages. Open up your terminal and run the following command:
“`
sudo apt update && sudo apt upgrade
“`
This will ensure that your server has the latest software updates and security patches. Once the update is complete, we can move on to installing the necessary packages.
To set up your VPN server, we’ll be using OpenVPN. OpenVPN is a popular and secure VPN protocol that is widely supported. To install OpenVPN, run the following command:
“`
sudo apt install openvpn
“`
During the installation process, you’ll be prompted to confirm the installation and enter your sudo password. Once the installation is complete, we can move on to configuring OpenVPN.
Before we start configuring OpenVPN, we need to generate some encryption keys and certificates. OpenVPN uses these keys and certificates to secure your VPN connection. To generate the necessary files, run the following command:
“`
sudo /usr/share/doc/openvpn/examples/sample-config-files/easy-rsa/3.0.8/easyrsa init-pki
“`
This command will initialize the Public Key Infrastructure (PKI) necessary for OpenVPN. Next, we need to generate the Diffie-Hellman parameters. Run the following command:
“`
sudo /usr/share/doc/openvpn/examples/sample-config-files/easy-rsa/3.0.8/easyrsa gen-dh
“`
This will generate the Diffie-Hellman parameters, which are used for key exchange during the VPN connection setup.
Now that we have our keys and certificates, let’s move on to configuring OpenVPN. OpenVPN uses a configuration file to define its settings. We’ll be using the default configuration file as a starting point. Copy the default configuration file to the OpenVPN directory with the following command:
“`
sudo cp /usr/share/doc/openvpn/examples/sample-config-files/server.conf.gz /etc/openvpn/
“`
Next, we need to extract the configuration file from the compressed archive. Run the following command:
“`
sudo gzip -d /etc/openvpn/server.conf.gz
“`
Now that we have the configuration file, we can start customizing it to fit our needs. Open the configuration file in your favorite text editor:
“`
sudo nano /etc/openvpn/server.conf
“`
In the configuration file, you’ll find various settings that you can modify. For example, you can change the port on which OpenVPN listens, enable or disable compression, and specify the DNS servers to use. Take your time to go through the configuration file and make the necessary changes.
Once you’re done customizing the configuration file, save and close it. Now, we can start the OpenVPN service:
“`
sudo systemctl start openvpn@server
“`
To ensure that the OpenVPN service starts automatically on boot, run the following command:
“`
sudo systemctl enable openvpn@server
“`
And that’s it! You’ve successfully installed and configured your Ubuntu 20.04 server as your own VPN server. You can now connect to your VPN server using an OpenVPN client and enjoy a secure and private internet connection.
Remember, setting up your own VPN server is just the first step. It’s important to keep your server up to date with the latest security patches and follow best practices for securing your VPN server. With a little bit of effort, you can have a reliable and secure VPN server that you control. Happy VPN-ing!
Troubleshooting common issues during VPN Server setup on Ubuntu 20.04
Setting up a VPN server on your Linux Ubuntu 20.04 server can be a great way to enhance your online security and privacy. However, like any technical process, it can sometimes come with its fair share of challenges. In this article, we will discuss some common issues that you may encounter during the setup of your VPN server on Ubuntu 20.04 and provide troubleshooting tips to help you overcome them.
One common issue that users often face is the inability to establish a connection to the VPN server. This can be caused by a variety of factors, such as incorrect configuration settings or firewall restrictions. To troubleshoot this issue, start by double-checking your configuration files to ensure that all the necessary settings are correctly entered. Pay close attention to details such as the server address, port number, and authentication credentials.
If your configuration settings appear to be correct, the next step is to check your firewall settings. Ubuntu 20.04 comes with a built-in firewall called UFW (Uncomplicated Firewall). Make sure that the necessary ports for your VPN server are open in the firewall. You can do this by running the following command in the terminal: “sudo ufw allow [port number]”. Replace [port number] with the actual port number used by your VPN server.
Another common issue that users encounter is slow connection speeds when using their VPN server. This can be frustrating, especially if you are expecting fast and reliable internet access. Slow speeds can be caused by a variety of factors, including network congestion, server overload, or even your internet service provider (ISP) throttling your connection.
To troubleshoot slow connection speeds, start by testing your internet speed without the VPN enabled. This will give you a baseline to compare against when the VPN is active. If your internet speed is significantly slower with the VPN enabled, try connecting to a different server location. Sometimes, certain server locations can be overloaded, resulting in slower speeds. Experiment with different server locations to find the one that offers the best performance for your needs.
If you are still experiencing slow speeds, it may be worth considering upgrading your internet plan with your ISP. Some ISPs have been known to throttle VPN connections, especially on lower-tier plans. Upgrading to a higher-tier plan can often resolve this issue and provide you with faster speeds.
Lastly, another common issue that users encounter is difficulty connecting to their VPN server from a different network or location. This can be caused by network restrictions or firewall settings on the network you are trying to connect from. To troubleshoot this issue, try connecting to your VPN server from a different network, such as a public Wi-Fi hotspot or a friend’s network. If you are able to connect successfully, it indicates that the issue lies with the network you were initially trying to connect from.
If you are unable to connect to your VPN server from any network, it may be worth checking your router settings. Some routers have built-in VPN passthrough settings that need to be enabled in order for VPN connections to work properly. Consult your router’s documentation or contact your router manufacturer for instructions on how to enable VPN passthrough.
In conclusion, setting up a VPN server on your Linux Ubuntu 20.04 server can be a valuable tool for enhancing your online security and privacy. While it may come with its fair share of challenges, troubleshooting common issues such as connection problems and slow speeds can help ensure a smooth and reliable VPN experience. By following the troubleshooting tips outlined in this article, you can overcome these issues and enjoy the benefits of your own VPN server.
Best practices for managing and maintaining your Ubuntu 20.04 VPN Server
So, you’ve decided to set up your own VPN server using Linux Ubuntu 20.04. That’s a great choice! Not only will it give you more control over your online privacy and security, but it can also be a fun and rewarding project. In this article, we’ll walk you through the best practices for managing and maintaining your Ubuntu 20.04 VPN server.
First things first, let’s start with the installation process. Installing Ubuntu 20.04 is fairly straightforward, and there are plenty of resources available online to guide you through the process. Once you have Ubuntu up and running, it’s time to configure your server as a VPN server.
The first step in configuring your VPN server is to install the necessary software. OpenVPN is a popular choice for setting up VPN servers, and it can be easily installed using the apt package manager. Simply open a terminal and run the command “sudo apt install openvpn” to install OpenVPN.
Once OpenVPN is installed, you’ll need to generate the necessary encryption keys and certificates. OpenVPN provides a handy script called “easy-rsa” that simplifies this process. Run the command “sudo apt install easy-rsa” to install it, and then navigate to the easy-rsa directory using the command “cd /usr/share/easy-rsa”.
Now that you’re in the easy-rsa directory, run the command “sudo ./easyrsa init-pki” to initialize the Public Key Infrastructure (PKI). Next, generate the Certificate Authority (CA) by running the command “sudo ./easyrsa build-ca”. This will generate the necessary files for your VPN server.
With the CA generated, it’s time to create the server certificate and key. Run the command “sudo ./easyrsa gen-req server nopass” to generate the server certificate request. Once that’s done, sign the certificate by running the command “sudo ./easyrsa sign-req server server”. This will generate the server certificate and key.
Now that you have the necessary certificates and keys, it’s time to configure OpenVPN. Open the OpenVPN server configuration file using the command “sudo nano /etc/openvpn/server.conf”. In this file, you’ll need to make a few changes.
First, uncomment the line that says “tls-auth ta.key 0” by removing the “#” symbol. This enables the use of a TLS authentication key for added security. Next, uncomment the line that says “cipher AES-256-CBC” to enable AES-256 encryption. Finally, uncomment the line that says “user nobody” and “group nogroup” to run OpenVPN with restricted privileges.
Save the changes and exit the editor. Now, start the OpenVPN service by running the command “sudo systemctl start openvpn@server”. To ensure that the service starts automatically on boot, run the command “sudo systemctl enable openvpn@server”.
Congratulations! You’ve successfully set up your Ubuntu 20.04 server as a VPN server. However, there are a few additional steps you can take to further enhance the security and performance of your VPN server.
One important step is to enable firewall rules to restrict access to your VPN server. Ubuntu 20.04 comes with a built-in firewall called UFW (Uncomplicated Firewall). Run the command “sudo ufw allow OpenSSH” to allow SSH access, and then run the command “sudo ufw allow 1194/udp” to allow OpenVPN traffic.
Additionally, you may want to consider using a dynamic DNS service to assign a domain name to your VPN server. This will make it easier to connect to your server from anywhere in the world, even if your IP address changes.
In conclusion, setting up your own VPN server using Linux Ubuntu 20.04 can be a rewarding experience. By following these best practices for managing and maintaining your VPN server, you can ensure that your online privacy and security are in good hands. So go ahead, give it a try, and enjoy the benefits of having your own VPN server!
Conclusion
To install and configure your Linux Ubuntu 20.04 Server as your own VPN Server, follow these steps:
1. Update your system:
– Open a terminal.
– Run the command: `sudo apt update && sudo apt upgrade`
2. Install OpenVPN:
– Run the command: `sudo apt install openvpn`
3. Generate the Easy-RSA keys:
– Run the command: `sudo apt install easy-rsa`
– Navigate to the Easy-RSA directory: `cd /usr/share/easy-rsa`
– Initialize the PKI (Public Key Infrastructure): `sudo ./easyrsa init-pki`
– Build the Certificate Authority (CA): `sudo ./easyrsa build-ca`
4. Generate the server certificate and key:
– Generate the server certificate and key: `sudo ./easyrsa gen-req server nopass`
– Sign the server certificate: `sudo ./easyrsa sign-req server server`
5. Generate Diffie-Hellman parameters:
– Generate the Diffie-Hellman parameters: `sudo ./easyrsa gen-dh`
6. Create the OpenVPN server configuration file:
– Create a new file: `sudo nano /etc/openvpn/server.conf`
– Add the following content to the file:
“`
port 1194
proto udp
dev tun
ca /usr/share/easy-rsa/pki/ca.crt
cert /usr/share/easy-rsa/pki/issued/server.crt
key /usr/share/easy-rsa/pki/private/server.key
dh /usr/share/easy-rsa/pki/dh.pem
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push “redirect-gateway def1 bypass-dhcp”
push “dhcp-option DNS 8.8.8.8”
push “dhcp-option DNS 8.8.4.4”
keepalive 10 120
tls-auth /usr/share/easy-rsa/pki/ta.key 0
cipher AES-256-CBC
auth SHA256
user nobody
group nogroup
persist-key
persist-tun
status openvpn-status.log
verb 3
explicit-exit-notify 1
“`
7. Enable IP forwarding:
– Open the sysctl.conf file: `sudo nano /etc/sysctl.conf`
– Uncomment the line: `net.ipv4.ip_forward=1`
– Save and close the file.
– Apply the changes: `sudo sysctl -p`
8. Configure firewall rules:
– Allow incoming connections on the OpenVPN port: `sudo ufw allow 1194/udp`
– Enable UFW (Uncomplicated Firewall): `sudo ufw enable`
9. Start and enable the OpenVPN service:
– Start the OpenVPN service: `sudo systemctl start openvpn@server`
– Enable the service to start on boot: `sudo systemctl enable openvpn@server`
10. Generate client certificates:
– Generate the client certificate and key: `sudo ./easyrsa gen-req client nopass`
– Sign the client certificate: `sudo ./easyrsa sign-req client client`
11. Retrieve the client configuration file:
– Create a new file: `sudo nano /etc/openvpn/client.ovpn`
– Add the following content to the file:
“`
client
dev tun
proto udp
remote 1194
resolv-retry infinite
nobind
persist-key
persist-tun
remote-cert-tls server
cipher AES-256-CBC
auth SHA256
key-direction 1
tls-client
tls-auth /usr/share/easy-rsa/pki/ta.key 1
—–BEGIN CERTIFICATE—–
—–END CERTIFICATE—–
—–BEGIN CERTIFICATE—–
—–END CERTIFICATE—–
—–BEGIN PRIVATE KEY—–
—–END PRIVATE KEY—–
“`
12. Transfer the client.ovpn file to your client device.
In conclusion, by following the above steps, you can successfully install and configure your Linux Ubuntu 20.04 Server as your own VPN Server.