Abstract: A network wherein multiple client-terminals can communicate with a client-server and Kerberos Server. A client may request service from a Kerberos Server, via a Kerberos Support Library, which can be handled as a synchronous message response from the Kerberos Server and Kerberos Support Library, such that the program managing the response does not need to access any other programs for the handling and transmitting of the synchronous message response back to the client. Thus an unsolicited message is returned to the client-terminal without any interference to the operator's usage of the client-terminal during the interim.