How to Use a VPN on Linux: Client Recommendations and Command-Line Configuration Guide

Linux users generally aren't afraid of tinkering, but when it comes to configuring a VPN, quite a few still get stuck at the command line. GUI clients are scarce on Linux to begin with, and many VPN providers only make apps for Windows and Mac, leaving Linux users to figure it out on their own.

This article covers which VPN clients you can use on Linux and how to get a VPN running via the command line. We'll also touch on how to use lightxtreme VPN in a Linux environment, as a reference for those who'd rather not tinker.

Common VPN Clients on Linux

VPN solutions in the Linux ecosystem roughly fall into two categories: generic protocol clients where you fill in the configuration yourself, and dedicated clients provided by service providers. The former offers more flexibility, the latter more convenience.

A few mainstream options:

• OpenVPN: A veteran protocol supported by nearly all VPN providers. Linux has official command-line tools and a NetworkManager plugin, with configuration files typically in .ovpn format.
• WireGuard: The hottest protocol in recent years — minimal code, fast speeds, simple configuration. It's been built into the kernel since 5.6, so just install wg-tools and you're good to go.
• NetworkManager: The built-in network management tool on desktop distributions (Ubuntu, Fedora, etc.). You can import OpenVPN and WireGuard configurations and connect with a few clicks.
• Dedicated clients: Providers like Mullvad and ProtonVPN have their own Linux clients. lightxtreme VPN is currently used on Linux mainly through configuration files or third-party protocol tools.

Which one to choose depends on your needs. If you want convenience, import a configuration via NetworkManager; if you want fine-grained control, go with the command line.

Configuring OpenVPN via the Command Line

Installing OpenVPN on Linux is straightforward. On Debian/Ubuntu, use sudo apt install openvpn; on Fedora, sudo dnf install openvpn; on Arch, sudo pacman -S openvpn.

Once installed, place the .ovpn configuration file from your provider into a directory, such as /etc/openvpn/client/. Then run:

sudo openvpn --config /etc/openvpn/client/your-config.ovpn

If the configuration file doesn't include authentication credentials, you'll be prompted to enter your username and password. To run it in the background, add the --daemon flag, or manage it with systemd.

One gotcha to watch out for: some .ovpn files reference external certificate files, so make sure the paths are correct or you'll get errors. It's best to keep all related files in the same directory.

WireGuard Configuration Is Even Simpler

WireGuard's configuration files are much cleaner than OpenVPN's. To install: sudo apt install wireguard (Debian/Ubuntu).

Then generate a key pair:

1. wg genkey | tee privatekey | wg pubkey > publickey
2. Put the private key in the configuration file and submit the public key to your provider
3. Your provider will give you a configuration file containing the server's public key, Endpoint, and AllowedIPs

Once the configuration is written, start it with sudo wg-quick up wg0 and stop it with sudo wg-quick down wg0. To enable it at boot, use sudo systemctl enable wg-quick@wg0.

WireGuard's advantages are fast connections and low latency, making it great for speed-sensitive scenarios. However, it doesn't obfuscate traffic by default, so it may be detected in certain network environments — keep that in mind.

How to Use lightxtreme VPN on Linux

lightxtreme VPN is primarily aimed at desktop and mobile users, and there's currently no standalone GUI client for Linux. However, its service supports standard protocols, so you can get OpenVPN or WireGuard configuration files from the official website and configure them manually on Linux using the methods above.

According to publicly available industry data, about 3% of global VPN users used Linux systems in 2023. Though the share isn't high, these users typically have higher demands for privacy and controllability. lightxtreme VPN supports multiple devices online simultaneously, so a Linux machine can share one account with other devices.

If you'd rather not configure things manually, you could also run a Windows virtual machine on Linux to use the lightxtreme VPN client, or flash your router's firmware to route your entire local network through the VPN. However, these approaches have higher setup costs and are better suited to users with networking experience.

A Few Practical Tips

First, keep your private keys and certificates in the configuration files secure — set permissions to 600 so other users can't read them. Second, after connecting to the VPN, you can check whether your exit IP has changed with curl ifconfig.me. Third, if you have DNS leaks, you can specify a DNS server in the configuration file or set it manually with resolvectl.

Using a VPN on Linux isn't as hard as you might think — pick the right protocol, set up your configuration files, and the rest is just a few commands. Instructions for obtaining lightxtreme VPN configuration files are available in the help center on the official website, and you basically can't go wrong following them.

If you'd like to give it a try, head to the lightxtreme VPN official website to see the supported protocols and platforms, download the corresponding configuration files, and you'll have it running on Linux in just a few minutes.