Enable support for RADIUS authentication when VpnClientProtocol set to OpenVPN
It appears that the recent public preview of OpenVPN protocol for P2S only supports Certificate Authentication. We would like to continue to use RADIUS authentication for our P2S clients.
Ali Zaman - MSFT commented
RADIUS is currently supported with IKEv2 and SSTP only. We don't have any plans at the moment to integrate RADIUS with OpenVPN.