Open Source C VPN Software for Server Operating Systems

OpenVPN v2.3.18 was the last version that officially supports Windows XP and Windows Server 2003. We lately had the need to use the newer version 2.5.4 of OpenVPN to support stronger data ciphers like AES-256-CBC. Therefore we decided to rebuild the whole package from the ground up to make it compatible with Windows XP and Windows Server 2003. The following article describes in detail how you can rebuild OpenVPN v2.5.4 for use on these older operating systems. The benefits of this new version include: - support of stronger data ciphers like AES-256-CBC - new TAP-Driver with a network speed of 1 GBit/s instead of 10 MBit/s - severe bug on Windows XP SP3 solved where we can't connect to the VPN server For more details visit https://openvpn-for-windows-xp.sourceforge.io/

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

RAS-SMS is a simple extension to Microsoft's Remote Access Service (RAS). RAS-SMS adds two factor authentication to standard VPN/PPTP clients on Windows, Mac-OS and Linux. RAS-SMS uses your mobile phone instead of smart cards, RSA keys or USB tokens.