According to a first aspect, it is presented a method, executed in a gateway, the gateway being arranged to facilitate communication between a client device and an application server. The method comprises the steps of: receiving a client request from the client device, the client request comprising at least a portion being bound for the application server; sending an application server request to the application server; receiving an application server response from the application server, the application server response indicating a need to provide authentication; establishing at least one authentication credential using an authentication server for a connection between the client device and the application server; and sending a client response to the client device, the client response being based on the application server response and comprising the at least one authentication credential. An associated gateway, client device, vehicle, computer program and computer program product are also presented.