Hi @MartinL,
Do I have to install then something else?
Nope, one of the benefits of our broker is you don’t need to install plugins
If my backend webservice is behind a firewall, does it make sence to opend special ports also or is it enough to open the port for the backend service.
This really depends on your security constraints and what already has access to call the service via the microgateway on the broker. You’ll likely wnat some security in place. I’d recommend checking out our Security Overview docs. Especially the Authorization section which covers how you can authorize who can connect and what resources (topics/queues) they have access to.
Hope that helps!