The disclosure relates to a method for discovery of one or more devices of a group of devices to establish a direct connection between at least two devices of the group of devices over a wide area network. The wide area network contains or is connected to a discovery server system. The discovery server system is configured for identifying a group associated with the group of devices, wherein each of the devices has a corresponding device identifier associated with the group. A discovery message from a first device of the group of devices is received, the discovery message comprising a device identifier associated with the first device. The group associated with the group of devices is determined on the basis of the received device identifier of the first device. The corresponding device identifier of one or more devices of the group of devices is determined on the basis of the determined group, and discovery information is transmitted only to one or more devices of the group of devices.