Acces TTN data from Node-Red hosted in a server

Hi folks,

We can access our data in TTN from Node-Red in our PC like this https://www.thethingsnetwork.org/docs/applications/nodered/quick-start.html. We are trying to do the same hosting Node-Red in a server (we opened ports 1900 and 1700) but we can´t access the data. What can be the problem?

Thanks

That says:

Add The Things Network nodes

But, don’t, as those are deprecated:

:warning: The support and maintenance for this SDK has been discontinued, it is not recommended to use the SDK for new projects.

Instead, see MQTT in Node-RED [HowTo].

As for firewalls: an MQTT client opens a connection to the remote broker (server) on port 8883 (or 1883 for non-TLS). A client does not need incoming connections.