{"id":7716,"date":"2024-07-16T20:13:51","date_gmt":"2024-07-17T03:13:51","guid":{"rendered":"https:\/\/ioflood.com\/blog\/?p=7716"},"modified":"2024-07-16T20:13:51","modified_gmt":"2024-07-17T03:13:51","slug":"install-openvpn-linux","status":"publish","type":"post","link":"https:\/\/ioflood.com\/blog\/install-openvpn-linux\/","title":{"rendered":"How to Install OpenVPN Linux | Secure Your Connections"},"content":{"rendered":"
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\"Tech<\/figure>\n<\/div>\n

Accessing remote servers is a vital technique for us at IOFLOOD<\/a>, and we often install OpenVPN Linux for secure network connections. To educate to our customers how to install openVPN on their bare metal cloud servers<\/a> we’ve included our most efficient methods in today’s article.<\/p>\n

In this tutorial, we will guide you on how to install OpenVPN Linux.<\/strong> We will show you methods for both APT and YUM-based distributions, delve into compiling OpenVPN<\/code> from source, installing a specific version, and finally, how to use the OpenVPN<\/code> command and ensure it’s installed correctly.<\/p>\n

So, let’s dive in and begin learning how to install OpenVPN on your Linux system!<\/p>\n

TL;DR: How Do I Install OpenVPN Ubuntu?<\/h2>\n

\n You can install OpenVPN on Ubuntu with the command sudo apt-get install openvpn<\/code>. After installation, you can use OpenVPN by running the command sudo openvpn --config \/path\/to\/your\/config.ovpn<\/code>. Here’s an example:\n<\/p><\/blockquote>\n

# Install OpenVPN on Ubuntu\nsudo apt-get install openvpn\n\n# Use OpenVPN with a configuration file\nsudo openvpn --config \/path\/to\/your\/config.ovpn\n\n# Output:\n# Initialization Sequence Completed\n<\/code><\/pre>\n
This is just a basic way to install and use OpenVPN on Linux. But there’s so much more to learn about OpenVPN, including advanced installation methods, alternative VPN solutions, and troubleshooting common issues. Continue reading for a comprehensive guide on installing and using OpenVPN on Linux.<\/p>\n
Quick Start Your OpenVPN Install<\/h2>\n
OpenVPN is an open-source Virtual Private Network (VPN) application that lets you create secure point-to-point or site-to-site connections. It’s often used to secure internet connections, allowing users to browse privately and securely.<\/p>\n
Now, let’s walk you through the process of installing OpenVPN on Linux. We’ll cover installations using both APT and YUM package managers.<\/p>\n
Install OpenVPN Ubuntu with APT<\/h3>\n
If you’re using a Debian-based distribution like Ubuntu, you’ll be using the APT package manager. Here’s how you can install OpenVPN:<\/p>\n
sudo apt update\nsudo apt install openvpn\n\n# Output:\n# Reading package lists... Done\n# Building dependency tree\n# Reading state information... Done\n# The following additional packages will be installed:\n#  libpkcs11-helper1\n# Suggested packages:\n#  resolvconf\n# The following NEW packages will be installed:\n#  libpkcs11-helper1 openvpn\n# 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.\n# Need to get 0 B\/467 kB of archives.\n# After this operation, 1,056 kB of additional disk space will be used.\n# Do you want to continue? [Y\/n]\n<\/code><\/pre>\n
In the above example, we first updated the package lists for upgrades and new packages with sudo apt update<\/code>. Then, we installed OpenVPN using sudo apt install openvpn<\/code>. The output shows that OpenVPN and its dependencies have been installed successfully.<\/p>\n
YUM Install OpenVPN Linux<\/h3>\n
If you’re using a RedHat-based distribution like CentOS, you’ll be using the YUM package manager. Here’s how you can install OpenVPN:<\/p>\n
sudo yum update\nsudo yum install openvpn\n\n# Output:\n# Loaded plugins: fastestmirror, langpacks\n# Loading mirror speeds from cached hostfile\n# Resolving Dependencies\n# --> Running transaction check\n# ---> Package openvpn.x86_64 0:2.4.10-1.el7 will be installed\n# --> Finished Dependency Resolution\n# Dependencies Resolved\n# ================================================================================\n#  Package      Arch        Version               Repository                Size\n# ================================================================================\n# Installing:\n#  openvpn      x86_64      2.4.10-1.el7          epel                     489 k\n# Transaction Summary\n# ================================================================================\n# Install  1 Package\n# Total download size: 489 k\n# Installed size: 1.6 M\n# Is this ok [y\/d\/N]: \n<\/code><\/pre>\n
In the above example, we first updated the package lists with sudo yum update<\/code>. Then, we installed OpenVPN using sudo yum install openvpn<\/code>. The output shows that OpenVPN has been installed successfully.<\/p>\n
How to Install OpenVPN from Source<\/h2>\n
Installing from source gives you the latest version and full control over the configuration. Here’s how you can do it:<\/p>\n
wget https:\/\/swupdate.openvpn.net\/community\/releases\/openvpn-2.4.9.tar.gz\ntar -xvzf openvpn-2.4.9.tar.gz\ncd openvpn-2.4.9\n.\/configure\nmake\nsudo make install\n\n# Output:\n# 'openvpn-2.4.9.tar.gz' saved\n# openvpn-2.4.9\/\n# openvpn-2.4.9\/Changes.rst\n# ...\n# openvpn-2.4.9 installed\n<\/code><\/pre>\n
In the above example, we first downloaded the OpenVPN source code using wget<\/code>. We then extracted the tarball using tar -xvzf<\/code>, navigated into the directory with cd<\/code>, and built and installed OpenVPN using .\/configure<\/code>, make<\/code>, and sudo make install<\/code>.<\/p>\n
Specific Versions: Install OpenVPN<\/h2>\n
Different versions of OpenVPN may have different features or compatibility. Here’s how you can install specific versions.<\/p>\n
From Source<\/h3>\n
You can specify the version by downloading the corresponding source code. For example, to install version 2.4.7, replace openvpn-2.4.9.tar.gz<\/code> with openvpn-2.4.7.tar.gz<\/code> in the previous example.<\/p>\n
Using APT<\/h3>\n
On Debian-based distributions, you can specify the version using the following syntax:<\/p>\n
sudo apt-get install openvpn=2.4.7-1ubuntu2\n\n# Output:\n# Reading package lists... Done\n# Building dependency tree\n# Reading state information... Done\n# openvpn is already the newest version (2.4.7-1ubuntu2).\n<\/code><\/pre>\n
Using YUM<\/h3>\n
On RedHat-based distributions, you can specify the version using the following syntax:<\/p>\n
sudo yum install openvpn-2.4.7-1.el7\n\n# Output:\n# Loaded plugins: fastestmirror, langpacks\n# Loading mirror speeds from cached hostfile\n# Resolving Dependencies\n# --> Running transaction check\n# ---> Package openvpn.x86_64 0:2.4.7-1.el7 will be installed\n# --> Finished Dependency Resolution\n<\/code><\/pre>\n
Here’s a comparison of different OpenVPN versions:<\/p>\n\n\n\n\n\n\n\n
Version<\/th>\nNotable Changes<\/th>\nCompatibility<\/th>\n<\/tr>\n<\/thead>\n
2.4.9<\/td>\nImproved TLS 1.3 support<\/td>\nUbuntu 20.04, CentOS 8<\/td>\n<\/tr>\n
2.4.7<\/td>\nFixed renegotiation bug<\/td>\nUbuntu 18.04, CentOS 7<\/td>\n<\/tr>\n
2.4.6<\/td>\nAdded support for LZ4 compression<\/td>\nUbuntu 16.04, CentOS 6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Using and Verifying OpenVPN Install<\/h2>\n
After installing OpenVPN, you can use it by specifying a configuration file:<\/p>\n
sudo openvpn --config \/path\/to\/your\/config.ovpn\n\n# Output:\n# Initialization Sequence Completed\n<\/code><\/pre>\n
To verify that OpenVPN is installed correctly, you can check its version:<\/p>\n
openvpn --version\n\n# Output:\n# OpenVPN 2.4.9 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH\/PKTINFO] [AEAD] built on Apr 16 2020\n<\/code><\/pre>\n
In the above examples, we used OpenVPN with a configuration file and checked its version. The Initialization Sequence Completed<\/code> message indicates that OpenVPN is running correctly.<\/p>\n
Alternatives to OpenVPN Install<\/h2>\n
While OpenVPN is a robust and widely-used VPN solution, it’s not the only one available for Linux users. Let’s explore two alternative VPN solutions: WireGuard and IPsec.<\/p>\n
WireGuard: The Lightweight Contender<\/h3>\n
WireGuard is a newer, lightweight VPN solution. It’s faster and easier to set up than OpenVPN. Here’s how you can install WireGuard on Ubuntu:<\/p>\n
sudo add-apt-repository ppa:wireguard\/wireguard\nsudo apt-get update\nsudo apt-get install wireguard\n\n# Output:\n# WireGuard is now installed on your system.\n<\/code><\/pre>\n
In the above example, we added the WireGuard repository, updated our package lists, and installed WireGuard. The message at the end indicates a successful installation.<\/p>\n
IPsec: The Established Standard<\/h3>\n
IPsec is an older VPN solution that’s built into many network devices. It’s more complex to set up but is highly configurable. Here’s how you can install the strongSwan IPsec VPN on Ubuntu:<\/p>\n
sudo apt-get install strongswan\n\n# Output:\n# strongSwan IPsec VPN is now installed on your system.\n<\/code><\/pre>\n
In the above example, we installed the strongSwan IPsec VPN using APT. The message at the end indicates a successful installation.<\/p>\n
Here’s a comparison of OpenVPN, WireGuard, and IPsec:<\/p>\n\n\n\n\n\n\n\n
VPN Solution<\/th>\nAdvantages<\/th>\nDisadvantages<\/th>\n<\/tr>\n<\/thead>\n
OpenVPN<\/td>\nWidely supported, robust<\/td>\nSlower, complex setup<\/td>\n<\/tr>\n
WireGuard<\/td>\nFast, easy setup<\/td>\nNewer, less tested<\/td>\n<\/tr>\n
IPsec<\/td>\nHighly configurable, built into many devices<\/td>\nComplex setup<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
While OpenVPN is a solid choice for most users, WireGuard and IPsec offer viable alternatives. Each solution has its strengths and weaknesses, so the best choice depends on your specific needs.<\/p>\n
Troubleshooting OpenVPN Install<\/h2>\n
Like any software, OpenVPN can sometimes run into issues. Here are some common problems you might encounter when installing or using OpenVPN on Linux, along with their solutions.<\/p>\n
OpenVPN Service Not Starting<\/h3>\n
Sometimes, the OpenVPN service may fail to start. You can check the status of the OpenVPN service with the following command:<\/p>\n
systemctl status openvpn\n\n# Output:\n# \u25cf openvpn.service - OpenVPN service\n#    Loaded: loaded (\/lib\/systemd\/system\/openvpn.service; enabled; vendor preset: enabled)\n#    Active: inactive (dead)\n<\/code><\/pre>\n
In this example, the Active: inactive (dead)<\/code> line indicates that the OpenVPN service is not running. You can start it with sudo systemctl start openvpn<\/code>.<\/p>\n
Connection Issues<\/h3>\n
If you’re having trouble connecting to a VPN server, check your configuration file and network settings. You can test your network connection with ping<\/code>, and you can check your OpenVPN logs for any error messages.<\/p>\n
ping -c 4 vpnserver.com\n\n# Output:\n# PING vpnserver.com (192.0.2.1) 56(84) bytes of data.\n# 64 bytes from 192.0.2.1: icmp_seq=1 ttl=64 time=0.026 ms\n<\/code><\/pre>\n
In this example, we used ping<\/code> to test the network connection to vpnserver.com<\/code>. The output shows that the server is reachable.<\/p>\n
Authentication Errors<\/h3>\n
If you’re getting authentication errors, check your username, password, and any certificate files. Make sure your credentials are correct, and that any certificate files are in the right place and have the correct permissions.<\/p>\n
ls -l \/path\/to\/cert.crt\n\n# Output:\n# -rw-r--r-- 1 root root 1234 Jan  1 00:00 \/path\/to\/cert.crt\n<\/code><\/pre>\n
In this example, we used ls -l<\/code> to check the permissions of cert.crt<\/code>. The output shows that the file is readable by all users.<\/p>\n
Remember, troubleshooting is a systematic process. If you’re having trouble, start with the basics and work your way up. And don’t forget to consult the OpenVPN documentation and community if you need help.<\/p>\n
Why Install OpenVPN Linux?<\/h2>\n
A Virtual Private Network (VPN) is a technology that creates a secure connection over a less secure network between your computer and the internet. It shields your browsing activity from prying eyes on public Wi-Fi, and more.<\/p>\n
What Makes VPNs Crucial?<\/h3>\n
In our increasingly connected world, ensuring the security of our digital data is vital. Here’s where VPNs come into play. They encrypt your data and disguise your online identity, making it harder for third parties to track your activities and steal data. The encryption takes place in real-time.<\/p>\n
# An example of data before encryption\necho 'This is some sensitive data.'\n\n# Output:\n# This is some sensitive data.\n\n# An example of data after encryption (not actual encryption)\necho 'This is some sensitive data.' | base64\n\n# Output:\n# VGhpcyBpcyBzb21lIHNlbnNpdGl2ZSBkYXRhLg==\n<\/code><\/pre>\n
In the above example, we used base64<\/code> to simulate how a VPN would encrypt your data. ‘This is some sensitive data.’ becomes ‘VGhpcyBpcyBzb21lIHNlbnNpdGl2ZSBkYXRhLg‘ after encryption.<\/span><\/p>\n
Different Types of VPNs<\/h3>\n
There are many types of VPNs, but the most common are remote access VPNs and site-to-site VPNs.<\/p>\n