Everyone can see that the port 5500 is open on your public IP-Address (your router/firewall). No one can know where it leads to (Roon ARC server running on your NAS). As long as the connected service is secured, and Roon ARC is, then you’re fine. If you don’t trust Roon Labs and Roon ARC then your only option is to not use Roon ARC. Set the port number for ARC in Roon settings to 0 to disable the automatic port forwarding.
ARC is a direct connection from the client to your core. There is not a “just Roon” option here. It’s a client-> server application where “the server” is the core that lives on your home network.
This should not surprise anyone with the now year+ of discussion and documentation Roon Labs has provided.
If you’re having issues with ARC we need more info about what issues you’re having.
James_I
(The truth is out there but not necessarily here)
7
Except be careful because there is a huge in Roon that resets the port when any Roon software restarts.