Assuming you are running HAOS, HA ingress should solve this for you.
Rather than navigating to to node red via ip:port, open the ui via the addon configuration in HA.
I do not see a lot about this. Is there a main site to read up on this and how it is used today?
Edit: I don’t think I need this so I won’t be trying to figure this out. I was trying to get smartthings working in Node-RED in HA. I was over-complicating this and now I realize I just need to use the sensors that I have in HA already.