An authentication component resides between a server and a client, or on a server, and monitors one or more transactions communicated between the server and the client. When the authentication component detects a transaction that contains a termination indication, the authentication session is terminated, forcing the client to re-authenticate the next time a transaction with the server is desired. The termination indication may have been provided by an application running on the server, or alternatively, the termination indication may be provided by the authentication component.