Installation.md

@@ -14,6 +14,7 @@ These programs are **required** in order to run Livebeat:
 Since we have everyting installed, we have to make our hands dirty before we can even touch Livebeat.
 
 ### RabbitMQ
+#### Authentification backend
 We need to change a few things for RabbitMQ. Since Livebeat handles all authentifications we have to tell RabbitMQ to use Livebeat as authentification backend.
 
 We need to enable the `rabbitmq_auth_backend_http` plugin:
@@ -32,6 +33,15 @@ auth_http.topic_path    = http://localhost:8040/user/topic
 ```
 This will basicly tell RabbitMQ to use this plugin as authentification method and then which paths and method to use.
 
+#### MQTT
+The frontend uses MQTT over WebSockets for real-time communication.
+
+Enable `rabbitmq_web_mqtt` plugin:
+```
+rabbitmq-plugins enable rabbitmq_web_mqtt
+```
+For more information [read here](https://www.rabbitmq.com/web-mqtt.html) if you want to setup SSL for example.
+
 ### Livebeat
 Livebeat uses a `.env` file as configuration so you have to create this file in the **root folder** of the backend.