Is there a way of setting up JMS for secure communications? Essentially, I want to be able to restrict topics to authorized users only.

JMS implementations typically provide a text-based console and/or graphical browser for setting the security for each topic and queue, including access lists. JMS clients can read and process a user ID and password dynamically, providing the ID and password as arguments to API methods that create client-side topic and queue objects, thereby restricting access for the server-side topics and queues to authorized users.