OpenVPN Community Software

With OpenVPN, you can:

  • tunnel any IP subnetwork or virtual ethernet adapter over a single UDP or TCP port,
  • configure a scalable, load-balanced VPN server farm using one or more machines which can handle thousands of dynamic connections from incoming VPN clients,
  • use all of the encryption, authentication, and certification features of the OpenSSL library to protect your private network traffic as it transits the internet,
  • use any cipher, key size, or HMAC digest (for datagram integrity checking) supported by the OpenSSL library,
  • choose between static-key based conventional encryption or certificate-based public key encryption,
  • use static, pre-shared keys or TLS-based dynamic key exchange,
  • use real-time adaptive link compression and traffic-shaping to manage link bandwidth utilization,
  • tunnel networks whose public endpoints are dynamic such as DHCP or dial-in clients,
  • tunnel networks through connection-oriented stateful firewalls without having to use explicit firewall rules,
  • tunnel networks over NAT,
  • create secure ethernet bridges using virtual tap devices, and
  • control OpenVPN using a GUI on Windows or Mac OS X.