Home > Computers > Security > Virtual Private Networks > Products and Tools > Open Source
http://linas.org/linux/iptunnel.html
Instructions on how to setup a IP tunnel under Linux
http://www.tldp.org/HOWTO/VPN-HOWTO/
Setting up a VPN with ssh and ppp.
http://www.tldp.org/HOWTO/VPN-Masquerade-HOWTO.html
How to configure masquerading of IPsec and PPTP VPN traffic.
http://www.openbsd.org/
OpenBSD aims to produce a free, secure multi-platform operating system that integrates strong cryptography including a current and complete IPSec implementation.
http://openvpn.net/
SSL/TLS based user-space VPN. Supports Linux, Solaris, OpenBSD, FreeBSD, NetBSD, Mac OS X, and Windows 2000/XP.
http://openvpn.se/
A Windows GUI for OpenVPN. Gives a systray icon with a menu to control OpenVPN.
http://pptpclient.sourceforge.net/
Linux, FreeBSD and NetBSD client for the proprietary Microsoft Point-to-Point Tunneling Protocol, PPTP.
http://pptp-gui.sourceforge.net/
A graphical user interface to the pptp-client software for Linux and BSD.
http://www.tinc-vpn.org/
A self-contained VPN solution designed to connect multiple sites together in a secure way. Runs on Linux, FreeBSD, OpenBSD, NetBSD, MacOS/X, Solaris, Windows 2000 and XP.
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