A remote office has a macOS device named Device1 that uses an IKEv2 VPN client. Your Azure subscription includes a VPN gateway (VPNGW1) that provides VPN connections to VNet1. To allow Device1 to access resources on VNet1 via VPNGW1 and minimize administrative effort, what should you do first?

The correct answer is to install the OpenVPN client on Device1. Azure VPN Gateway's IKEv2 point-to-site VPN connections do not natively support macOS clients. For macOS devices, Azure VPN Gateway supports OpenVPN protocol-based point-to-site VPN connections. Therefore, installing the OpenVPN client is the necessary first step to establish connectivity. Deploying a RADIUS server is unnecessary for basic point-to-site VPN connectivity and adds complexity. Adding an X.509 certificate might be part of the OpenVPN configuration but is not the initial step to enable the protocol itself. Configuring device settings in Microsoft Entra admin center is for device management and conditional access, not for enabling the fundamental VPN protocol support.