Open Source BSD VPN Software

Poptop is an open source implementation of a PPTP server. Running under x86 or embedded Motorola ColdFire architectures Poptop provides full interoperability with the Microsoft PPTP VPN client.

An open-source free cross-platform multi-protocol VPN program, as an academic project from University of Tsukuba, under the Apache License 2.0. The API Suite allows you to easily develop your original SoftEther VPN Server management application to control the VPN Server (e.g. creating users, adding Virtual Hubs, disconnecting a specified VPN sessions) from JavaScript, TypeScript, C# or other languages. SoftEther VPN ("SoftEther" means "Software Ethernet") is one of the world's most powerful and easy-to-use multi-protocol VPN software. It runs on Windows, Linux, Mac, FreeBSD and Solaris. SoftEther VPN is an optimum alternative to OpenVPN and Microsoft's VPN servers. SoftEther VPN has a clone-function of OpenVPN Server. You can integrate from OpenVPN to SoftEther VPN smoothly. SoftEther VPN is faster than OpenVPN. SoftEther VPN also supports Microsoft SSTP VPN for Windows Vista / 7 / 8. No more need to pay expensive charges for Windows Server license for Remote-Access VPN function.

OpenVPN ALS is a web-based SSL VPN server written in Java. It has a browser-based AJAX UI which allows easy access to intranet services. OpenVPN ALS is a direct descendant of Adito, which was a fork of SSL-Explorer.

SSL-Explorer is a fully-featured, web-based SSL VPN server. This project is no longer actively maintained as the SSL-Explorer technology has now been acquired by Barracuda Networks, Inc.

SVPN provides an encrypted tunnel between two hosts, which in combination with IP forwarding enabled on one of the hosts can create a VPN.

Campagnol is a decentralized VPN over UDP tunneling. It uses UDP hole punching to open connections through NAT/firewall and OpenSSL's DTLSv1 implementation for mutual authentication and encryption.

DSVPN is a Dead Simple VPN, designed to address the most common use case for using a VPN. Runs on TCP. Works pretty much everywhere, including on public WiFi where only TCP/443 is open or reliable. Uses only modern cryptography, with formally verified implementations. Small and constant memory footprint. Doesn't perform any heap memory allocations. Small (~25 KB), with an equally small and readable code base. No external dependencies. Works out of the box. No lousy documentation to read. No configuration file. No post-configuration. Run a single-line command on the server, a similar one on the client and you're done. No firewall and routing rules to manually mess with. Doesn't leak between reconnects if the network doesn't change. Blocks IPv6 on the client to prevent IPv6 leaks. Works on Linux (kernel >= 3.17), macOS and OpenBSD, as well as DragonFly BSD, FreeBSD and NetBSD in client and point-to-point modes. Adding support for other operating systems is trivial.

This contains a sample implementation of DTLS-VPN using OpenSSL DTLSv1 Support - to send data over an encrypted channel.

OAST is a cross-platform front-end (GUI) for OpenVPN-client, allowing to manage multiple. It's quite simple in use and provides base functionality such as monitoring connection status. Application is written in Java so it works on both Windows and Linux

OpenVPN is a robust and highly flexible tunneling application that uses all of the encryption, authentication, and certification features of the OpenSSL library to securely tunnel IP networks over a single TCP/UDP port. Discussion forums and project wiki can be found here: https://forums.openvpn.net/ http://community.openvpn.net/openvpn

The SLAN project is a GPL open-source project providing a cross platform Virtual Private Networking (VPN) solution focused on providing secured and accountable links over insecure broadcast media such as 802.11 wireless LANs and public ethernets.

Ncurses based tool for easily deploying IPsec tunnels using FreeSWAN (Linux only) Easy to configure a tunnel, simple options, user friendly interface

VPNmonitor is a Java tool for network administrators to monitor VPN and SSL connections. The graphical representation makes it easy to visualize messages between computer nodes. Users can also read messages not of the above types in plain text.

sshvpn is a shell script based tool which uses openssh vpn tunneling feature to connect two private networks or attach a host to the remote private network securely over the internet.

Yavipind is a secure tunnel aka 2 peers securely forward­ing packets toward each other.It is what most people calls a VPN (virtual private network). It forwards any kind ofpacket (IPv4, IPv6 or other) sent over the virtual network interface (e.g. t

OmniEdge is an Open source p2p layer 2 , zero-config mesh VPN infrastructure, a traditional VPN, AWS VPC, Ngrok, DDNS alternative. No central server, easy to scale with less maintenance. What happens in intranet, stays in in intranet.