This is a piece of software that lets you tunnel IPv4 data through a DNS server. This can be usable in different situations where internet access is firewalled, but DNS queries are allowed.
It runs on Linux, Windows, Mac OS X, FreeBSD, NetBSD and OpenBSD and needs a TUN/TAP device. The
... [More] bandwidth is assymetrical with limited upstream and up to 1 Mbit/s downstream. [Less]
strongSwan is an open source IPsec-based VPN solution. It features IKEv1 and IKEv2 keying capabilities and runs on Linux, Android, FreeBSD, macOS, iOS and Windows.
This project is for programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote programs. With its Secure
... [More] FTP implementation, you can play with remote files easily, without third-party programs others than libcrypto (from openssl). [Less]
Openswan is an Open Source implementation of IPsec for the Linux operating system. Is it a code fork of the FreeS/WAN project, started by a few of the developers who were growing frustrated with the politics surrounding the FreeS/WAN project.
JSch allows you to connect to an sshd server and use port forwarding, X11 forwarding, file transfer, etc., and you can integrate its functionality into your own Java programs.
tinc is a daemon with which you can create a virtual private network (VPN). One daemon can handle multiple connections, so you can create an entire (moderately sized) VPN with only one daemon per participating computer.
tinc can tunnel IPv4, IPv6 and/or Ethernet packets over IPv4 and IPv6 networks.
WireGuard is an extremely simple yet fast and modern VPN that utilizes state-of-the-art cryptography. It aims to be faster, simpler, leaner, and more useful than IPSec, while avoiding the massive headache. It intends to be considerably more performant than OpenVPN. WireGuard is designed as a general
... [More] purpose VPN for running on embedded interfaces and super computers alike, fit for many different circumstances. Initially released for the Linux kernel, it plans to be cross-platform and widely deployable. It is currently under heavy development, but already it might be regarded as the most secure, easiest to use, and simplest VPN solution in the industry. [Less]
autossh is a program to start a copy of ssh and monitor it, restarting it as necessary should it die or stop passing traffic. The idea is from rstunnel (Reliable SSH Tunnel), but implemented in C.
Cjdns implements an encrypted IPv6 network using public-key cryptography for address allocation and a distributed hash table for routing. This provides near-zero-configuration networking, and prevents many of the security and scalability issues that plague existing networks.
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