Abstract: Apparatuses for commissioning a joining node into a mesh network (7) comprising a relay node (2) and a router node (3, 4) is provided, wherein the router node (3, 4) is connected to a wide area network (5) including a server (6) for controlling grant of commissioning requests to join the mesh network (7). A receiving unit (203) is provided for receiving an authentication token from a relay node. A key generating unit (204) is provided for generating a pair-wise identity-based key between the joining node and the router node based on the identity of the joining node and an identity of the router node. A checking unit (205) is provided for checking whether the authentication token is valid based on at least the pair-wise identity-based key. A forwarding unit (206) for forwarding the handshake signal to the server over the wide area network if the authentication token is valid.