title: Restricting / Protecting Topics with MQTT and Solace
body: <p>I'm working toward an event-driven simulation infrastructure using Solace's PubSub+ for MQTT as a broker. I have a type of control message topic prefixed by <code>control/</code>.</p>
  <p>Is there anyway to protect/restrict publish access to this topic prefix (or specific topics in general) to one authenticated user (i.e. the controller node)?</p>
  <p>Thank you for your time!</p>