ARC suddenly unable to securely acces Roon server

Support ARC: Port Forwarding Help
1

My ARC connection has served perfectly from the beginning.
My core is an iMac.
All running the latest software updates, and now suddenly ARC is not working anymore?
‘unable to securely acces Roon server’
My iPhone see the core, just cannot connect outside of the wifi.

When I look into the setup, the iMac cannot find the Roon OS (no idea if this has something to do with it?)

Please bear in mind I am in no way an IT-expert, basic guidance needed hahaha.

Just don’t get it, it all worked perfectly and now (with same router, core etc etc) it suddenly doesnt.
I’ve tried everything from rebooting all the devices, re-installing all the software etc etc

2

Please check your Mac firewall and ensure that your Roon software is able to communicate through the firewall. There are tons of posts around these forums with similar reports, and Apple changed the firewall settings in the latest update.

3

Hi, thanks for reply.
I am aware of that, but also the firewall is set for Roon software, so that’s also not the problem here.

4

Just checked, Roon is able to communicate through the firewall.

This is the report I get:

{
“ipv4_connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“external_ip”: {“actual_external_ip”:“82.aaa.bbb.ccc”,“actual_external_ipv6”:“null”,“router_external_ip”:“null”},
“natpmp_autoconfig”: {“status”:“NotFound”},
“upnp_autoconfig”: {“status”:“NotFound”}
}

5

Hi @BigBadBone,

The most likely culprit here is that your internet service provider has implemented a layer of CG-NAT (carrier-grade network address translation). This is upstream of your network and Roon, and entirely out of our control.

Fortunately, there’s a simple workaround - if you install Tailscale on both your RoonServer iMac and your phone, you can bypass both the firewall and the CG-NAT layer. In short, this will allow you to connect without using port forwarding at all.

Read here for more details, and let us know if we can help further:

I’ll move this thread to the Support section just in case you have further questions. Thanks!

6

This topic was automatically closed 36 hours after the last reply. New replies are no longer allowed.