open source vpn

VPN's can be paid and free. They implement techniques that allow secure connections from one point to another with bridged configurations or remote access.

How does an open-source VPN server work?

A free open-source VPN makes use of the SSL/TLS feature in order to safeguard encryption while allowing data to bridge firewalls and address translators of networks. As an open-source VPN client, you can rest assured that an authentication mechanism is provided through the modes of secret keys, certificates, and the typical login criterion of a password and username. 

Open source VPN servers can then give authentication certificates to those who use certificate and signature authority in multiple client-server configurations.

Three of the best open-source VPNs

When it comes to choosing a free open source VPN, there is no shortage of options, and most of them are just fine for any small business or home use. However, larger businesses and corporations can benefit by accessing one of these three best open-source VPNs available.

Whether you use Windows, Mac, Android, iOS, or Linux, any of these top-quality candidates will suit your VPN open source needs just fine.

Libreswan VPN

Libreswan is a consistent windows protocol that is ultimately the most extensively accessed open-source VPN. It is usable on both the IPsec and the IKE. Libreswan has been accessible for 15 years and is one of the highest respected open-source VPN available. Their VPN codes have been built using tall bars and repository files, making implantation of this software simple.

Key Features:

  1. It makes use of the NSS crypto library.
  2. Can make use of an inbuilt IP sec loader or an IP sec stack of its own.
  3. Compatible with FreeBSD OS and iOS, and Linux 2.4 – 4.x.


This well-developed VPN open-source uses SSL VPN connections which imbeds a number of configurations including, Wi-Fi privacy and remote entrance, for example. OpenVPN is economical and an easier choice in comparison to other free virtual private network tools and is perfect for markets of the enterprise. Due to its public license, there are no restrictions found.

Key Features:

  1. It allows access to control guidelines with a virtual interface firewall.
  2. Offers numerous client validation methods such as smart cards, certificates, or 2-level authentication, etc.
  3. Features the allowance of secure networks with the use of SSL/TLS modes of operation.
  4. Compatible with iOS, Mac, Windows, and Android.

Securepoint TERRA

If you are looking for cost-effectiveness, this SSL VPN client is built with a small office or a branch of approximately ten users in mind. It is specially designated for enterprise mode. There are large numbers of users reporting major benefits from network attacks online. Securepoint Terra is a very strong gateway that will rectify the attack, as well as the unauthorized illegal user.

Key Features: 

  1. Allows secure connection of points.
  2. Most affordable for premium plans.
  3. Compatible with all Windows VPN editions.


When it comes down to choosing between these three giants of open source VPN, you just need to look at what system you are using, what size your business is, and the reason for being an open source VPN client in the first place. If you’re a remote worker looking for the security of your information, or a company that needs to have secure well-encrypted access to the internet, open-source VPNs are the right choice to keep you safe and secure.

Mark Coulman
About Mark Coulman

Cybersecurity expert with a keen interest in technology and digital privacy. Mark has more than 14 years of experience in creating and managing various reliable WEB applications for IT companies in the EU and the US. Loves 3-4 letter words like PHP, XML, HTML, CSS, DB2, ASP, CRM, ERP, SAP, etc.