Token2 TOTPRadius provides the RADIUS RFC-2865 for TOTP RFC-6238 based authentication. With TOTPRadius you can integrate a large variety of third-party products and systems with multi-factor authentication. A number of enterprise products and services like VPNs (including Meraki CVPN and Fortinet VPN), Citrix XenApp/XenDesktop, VMWare View and many others provide support for RADIUS servers to validate second factor of user authentications.
TOTPRadius supports OTP-only authentication based on RFC-2865 algorithm (TOTP: Time-Based One-Time Password Algorithm), LDAP authentication as well as LDAP+TOTP combined authentication. It provides a web based administration panel and an HTTPS REST based API service designed to enable users' self-enrollment.
TOTPRadius is a software-based virtual appliance designed to run on Hyper-V and VMWare hypervisors. It is free to use with up to 5 users.