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VPN solution built with OpenVPN® Community Edition - Open Source VPN

OpenVPN® Community Edition provides a full-featured open source SSL/TLS Virtual Private Network (VPN). The TurnKey Linux VPN software appliance leverages the open source 'openvpn-server', 'openvpn-client' and 'easy-rsa' software (developed by OpenVPN® Inc.) to support "site-to-site" or "gateway" access. "Site-to-site" can link 2 otherwise unconnected LANs; suitable for multi-site enterprise networks or linkage to an Amazon VPC. "Gateway" configuration can secure traffic across public and/or insecure wifi connections and/or provide a secure solution for remote work scenarios.

This appliance includes all the standard features in TurnKey Core, and on top of that:

  • OpenVPN® configurations:

    • Initialization hooks to configure common OpenVPN® deployments such as "site-to-site" server or client and gateway profiles.
    • All profiles support SSL/TLS certificates for authentication and key exchange.
    • Server and gateway deployments include a convenience script to add clients, generating all required keys and certificates, as well as a unified ovpn profile for clients to easily connect to the VPN.
    • Expiring obfuscated HTTPS urls can be created for clients to download their profiles (especially useful with mobile devices using a QR code scanner).
    • The server profile supports a private subnet configuration, enabling clients to reach servers behind the OpenVPN® server.
    • The gateway profile configures connecting clients to tunnel all their traffic through the VPN.
    • When adding clients in a server or gateway deployment, an optional parameter can be given to enable computers on a subnet behind the client to connect to the VPN.
    • For added security, OpenVPN® is configured to drop privilages, run in a chroot jail dedicated to CRL, and uses tls-auth for HMAC signature verification protecting againsts DoS attacks, port flooding, port scanning and buffer overflow vulnerabilities in the SSL/TLS implementation.

See the Usage documentation for further details, including Amazon VPC notes and cloudformation template.

Note: OpenVPN® is a registered trademark of OpenVPN® Inc. Neither TurnKey Linux nor this software appliance are affiliated with or endorsed by OpenVPN® Inc.

Potential issues caused by timezone mismatch

Some VPN client applications expect certificate timestamps to be in local time. However, by default, TurnKey servers use UTC time.

That can lead to the creation of certificates, which according to local time, are not yet valid. Under these circumstance, connection will fail.

To avoid that, please set the timezone for your TurnKey OpenVPN server prior to further configuration. To do that via the commandline:

dpkg-reconfigure tzdata

For further info re setting timezone, please see this TurnKey Blog post.

Credentials (passwords set at first boot)

  • Webmin, SSH: username root