Cannot connect Roon Arc to Roon Core

Roon Core Machine

iMac Retina 5K, 27 tum, 2020
3,8 GHz 8-Core Intel Core i7
16 GB 2667 MHz DDR4

Networking Gear & Setup Details

FortiGate 30E

  1. Who is your internet service provider?

  2. Please list the make and model of your modem and router?

  3. Do you have any additional network hardware, like additional routers or managed switches?

  4. Does your network have any VPNs, proxy servers, or enterprise-grade security?

Connected Audio Devices

Taiko Extreme USB

Description of Issue -

What is the exact port forwarding error message you see in the Roon Settings → ARC tab?

“connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“external_ip”: {“actual_external_ip”:“”,“router_external_ip”:“null”},
“natpmp_autoconfig”: {“status”:“NotFound”},
“upnp_autoconfig”: {“status”:“NotFound”}

I hope the images give sufficient info.

Best //Magnus

Hi Magnus

Odd, your cores IP is missing from the error message. It would normally be listed.

Can you access your core via a browser with the IP below the error message. I can see you can via the Roon app.

Hi Lewis
No, I cannot. Error message saying it’s not a valid web adress.

I just broke my setup by changing my cores static IP. My error message also didn’t show the cores IP. So I guess that’s normal now

It indicates to me you don’t have UPnP enabled nor a valid port forwarding rule.

Can you access your router settings and check for both. Screenshots may help.

Oh you can’t access your core via a browser with the IP

I can access my router settings but get lost in there

Is the FortiGate 30E your ISP device. Do you have any other WiFi/router devices?

I have a number of Ruckus Unleashed APs connected to the router via Ethernet. And yes, FortGate is the sole router

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Take a look at this on youtube.

The FortiGate 30E doesn’t support UPnP so it’s manual setup you’ll need.

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Thanks Lewis, first thing tomorrow :pray: Midnight in Sweden.

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It’s in French. So I will have to leave it to my wife :joy:

Thanks again

Sincere apologies.

This chap does an English version also. I shared the wrong one.

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There are quite a few on YouTube that should assist you.

The FortiGate firewalls can be a trickier setup than on others.


Ok, thanks. All up to me now :slightly_smiling_face:

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