Good afternoon,I have a DrayTek Vigor 2136 running firmware 5.3.6 and I am trying to configure the VPN to authenticate users via RADIUS. I have already configured the RADIUS server, but I cannot find where in the VPN settings I can reference it to use RADIUS — it only allows authentication with local (internal) users.I have configured the RADIUS server on my AD server as well, but when I run a test, it also reports a failure. Could you please guide me on how to resolve this issue?I have already tested the RADIUS server on Windows Server 2022 and it is working without any problems.

Thanks.