Mastering Security: How to Install OpenVPN on VPS

Sep 20, 2024

In today's digital world, securing your online presence is more important than ever. When it comes to managing data securely over the internet, utilizing a Virtual Private Server (VPS) combined with OpenVPN can be a game-changer. This guide will walk you through the extensive process of installing OpenVPN on a VPS to ensure that your internet activities remain private and protected against potential threats.

Understanding the Benefits of OpenVPN

OpenVPN is an open-source VPN solution that provides robust security while being highly configurable. Below are some key advantages of using OpenVPN:

  • High-Level Security: OpenVPN uses strong encryption methods and secure protocols.
  • Flexibility: It can be configured to run on different ports and to use various protocols, like TCP or UDP.
  • Support for Multiple Platforms: OpenVPN can be used on various devices, including Windows, macOS, Linux, and mobile platforms.
  • Community Driven: Being open-source means that there is a large community of developers and users continuously improving OpenVPN.

What You Need Before You Start

To install OpenVPN on VPS, you will need the following:

  1. A Virtual Private Server: You can choose a reliable provider such as GermanVPS.
  2. Root Access: You must have root (administrative) access to the VPS.
  3. Basic Linux Knowledge: Understanding Linux command-line basics will be beneficial.

Step-by-Step Guide to Install OpenVPN on VPS

Step 1: Access Your VPS

Start by connecting to your VPS using SSH. You can do this using a terminal or an SSH client like PuTTY. Use the following command, replacing username and ip-address with your VPS login credentials:

ssh username@ip-address

Step 2: Update Your System

Before proceeding with the installation, update your package list and upgrade your installed packages to the latest versions. Execute the following commands:

sudo apt updatesudo apt upgrade

Step 3: Install OpenVPN

You can install OpenVPN using the default package manager. For Ubuntu or Debian, use the command:

sudo apt install openvpn

Step 4: Set Up Easy-RSA

Easy-RSA is a tool that allows you to create your own certificate authority (CA). Install Easy-RSA by running:

sudo apt install easy-rsa

After installation, set up the Easy-RSA directory:

make-cadir ~/openvpn-ca

Step 5: Build the CA

Change to the Easy-RSA directory, source the variables, and then build the CA:

cd ~/openvpn-casource vars./clean-all./build-ca

Follow the prompts to enter the relevant information for your certificate.

Step 6: Create the Server Certificate, Key, and Encryption Files

Generate the server certificate and key, as well as the Diffie-Hellman parameters and HMAC signature:

./build-key-server server./build-dhopenvpn --genkey --secret keys/ta.key

Step 7: Configure the OpenVPN Service

Now, copy the sample server configuration file and modify it according to your needs:

cp /usr/share/doc/openvpn/examples/sample-config-files/server.conf.gz ~/gzip -d server.conf.gz

Open the configuration file using your preferred text editor and adjust the settings, particularly the key and certificate paths.

Step 8: Starting the OpenVPN Service

Once you have configured the OpenVPN server, you can start the service with the following command:

sudo systemctl start openvpn@server

To enable OpenVPN to start on boot, run:

sudo systemctl enable openvpn@server

Step 9: Configure Firewall and Routing

You will need to adjust your firewall to allow traffic through the OpenVPN port (default is 1194) and enable IP forwarding. Depending on your firewall, the commands may vary. For UFW (Uncomplicated Firewall), use:

sudo ufw allow 1194/udp

To enable IP forwarding, edit the sysctl.conf file:

sudo nano /etc/sysctl.conf

Uncomment or add the line net.ipv4.ip_forward=1. Apply the changes by running:

sudo sysctl -p

Step 10: Create Client Configuration

To connect to your VPN, you need to create a client configuration file. You can base it on the sample configuration provided with OpenVPN, adjusting the settings to specify the server's IP address and paths to your keys.

Testing Your VPN Connection

Now that you have installed OpenVPN and configured it, it’s crucial to test your connection. Use the client configuration file to connect and check your IP address before and after connecting to verify that your VPN is functioning. This can be done easily using websites like WhatIsMyIP.com.

Conclusion

By following these detailed steps to install OpenVPN on VPS, you have taken significant strides towards enhancing your online security. With OpenVPN running on your VPS, you can enjoy secure browsing, especially when using public networks. Always ensure to keep your software updated and review your security settings regularly to maintain optimal performance and protection.

Frequently Asked Questions

1. Is OpenVPN free to use?

Yes, OpenVPN itself is an open-source solution, and thus, it is free to use. However, hosting your VPN on a VPS will incur costs associated with the VPS service.

2. Can I use OpenVPN on my mobile device?

Absolutely! OpenVPN has client applications available for iOS and Android, enabling secure access on your mobile devices.

3. What should I do if I encounter issues while connecting to my VPN?

Ensure that your firewall is properly configured, and double-check your client configuration file for any errors or incorrect paths to certificate files.

4. How do I maintain my OpenVPN server?

Regularly check for updates, monitor logs for unauthorized access attempts, and back up your configuration and certificates to prevent data loss.

5. Can I run other applications on my VPS while using OpenVPN?

Yes, a VPS can run various applications concurrently, provided it has sufficient resources. Just monitor your server’s performance to ensure optimal functioning.

More posts