Hello @Monty Veerachaylukana ,
If you are looking for:
Tunnel Type: OpenVPN (SSL)
Authentication Type: Azure Active Directory
Then, Windows 10 operating system is the only available option at this point.
And yes, you can only use Azure VPN Client to obtain and validate an Azure AD token.
If you are looking for:
Tunnel Type: OpenVPN (SSL)
Authentication Type: Radius or Azure Certificate
Then you have Windows, Mac, iOS, Android & Linux OS options available and you can use the OpenVPN client from the OpenVPN website along with the respective native clients.
Reference articles for more information : https://learn.microsoft.com/en-us/azure/vpn-gateway/work-remotely-support#p2s
https://azure.microsoft.com/en-in/updates/aad-support-in-vpn/
https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-howto-openvpn-clients
Kindly let us know if the above helps or you need further assistance on this issue.
----------------------------------------------------------------------------------------------------------------
Please don’t forget to "Accept the answer" wherever the information provided helps you, this can be beneficial to other community members.