Abstract: Techniques are described that enable onboarding of a plurality of heterogeneous client devices with secure access to a wireless network using a network management system (NMS). The NMS has a memory to store a plurality of private pre-shared keys (PPSKs), where each PPSK is provisioned for a particular client device or a particular group of client devices. In response to a key lookup request from an access point (AP) device for a client device, the NMS performs a key lookup and, in response to identifying a PPSK provisioned for the client device, authenticates the client device to access the wireless network via the AP device. The NMS then manages one or more of tracking the client device, policy application to the client device, or handling of network traffic from the client device while connected to the wireless network using the PPSK as an identifier of the client device.