OpenVPN is a robust and highly configurable VPN (Virtual Private Network) daemon which can be used to securely link two or more private networks using an encrypted tunnel over the Internet. OpenVPN's principal strengths include wide cross-platform portability, excellent stability, support for dynamic IP addresses and NAT, adaptive link compression, single TCP/UDP port usage, a modular design that offloads most crypto tasks to the OpenSSL library, and relatively easy installation that in most cases doesn't require a special kernel module.
|Tags||Security Cryptography Networking Firewalls|
|Operating Systems||POSIX Linux Mac OS X BSD OpenBSD Solaris FreeBSD NetBSD Windows Windows|
Release Notes: The OpenVPN GUI is now packaged in the Windows installer. Extensions were made to Management Interface to allow greater programmatic control of the OpenVPN client and server. A topology subnet option was added, allowing intuitive tun-based VPN subnets having one IP address per client. DHCP proxy support was added for Windows clients using the route-gateway dhcp option. PKCS #11 features were added for using cryptographic tokens ("smart cards"). A multihome option was added to enable UDP-based multihoming of the server on multiple interfaces. A port-share option was added to allow OpenVPN and an HTTPS server to share TCP port 443.
Release Notes: Remaining issues with TAP driver signing on Vista x64 were worked out. OpenVPN will now run on Vista x64 with driver signing enforcement enabled. A 64-bit portability bug in the time_string function was fixed.
Release Notes: The Windows installer was updated with OpenSSL 0.9.7l DLLs to fix published vulnerabilities. A TAP-Win32 bug that caused a BSOD on Windows Vista was fixed. The TAP-Win32 driver was upgraded to version 8.4.
Release Notes: This release improves scalability and offers centralized management for VPN configurations supporting a large number of clients. It adds load balancing and failover support, a new management interface providing real-time control of running OpenVPN daemons, and major revisions to the documentation, including a complete rewrite of the HOWTO.
Release Notes: This long-awaited major release adds Win2000/XP support, tunnel-over-TCP or HTTP support, and better MTU options to work around problems with PMTU discovery or IP fragmentation.