Roon ARC remote access issue with Nucleus (ref#79FSVJ)

Support
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What’s happening?

· I'm having trouble with Roon ARC

What best describes your issue with ARC

· Other

How can we help?

· None of the above

Other options

· Other

Describe the issue

My Roon Arc app keeps saying my Nucleus isnt configured for remote access so it doesn’t work when I travel. How do I configure it please ?

Describe your network setup

Roon nucleus Net gear orbi router Nucleus connected by Ethernet

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Which Nucleus model do you have?

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You don’t configure Roon, you configure your ISP provided router to allow the port ARC communicates through to be open.

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Thanks. How do I know which port that is?

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It tells you when you are testing ARC. It’s default is 55000.

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Note: If you have a suitable Nucleus model (One or Titan) there is another way, hence my question

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Hello @David_Fenton,

Thank you for reaching out! You can find detailed instructions on how to configure Roon ARC port forwarding in the article below:

:link: ARC Port Forwarding Guide

If you’re unable to get port forwarding working, you can also use Tailscale as an alternative method to access Roon remotely.

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@David_Fenton - if you are still using the Nucleus that you acquired back in 2020, then I’m afraid you can’t use Tailscale, which is only supported on the Nucleus One and Titan models…

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Hello @Geoff_Coupe

Thank you for the notes. It is still possible installing it on the different host in the network or directly on the router

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Then Roon Labs should adjust this help article:

It states:

You will need to install Tailscale on both your RoonServer machine and your phone

Which implies that it needs to be installed on the Nucleus…

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Hi @David_Fenton,

It’s possible, although circuitous, to configure a separate computer on your network as a Tailscale subnet router. We don’t commonly recommend this route because it’s the opposite of plug-and-play and requires some proficiency with network settings, terminology, and the command line interface.

If you do choose to give it a shot, you’ll need to follow these specific instructions directly from Tailscale to install the subnet router and set up an access rule for the Nucleus.

It might be easier to just ask your ISP if they can provide a workaround.

Who is your internet service provider?

If your ISP has implemented carrier-grade network address translation (CG-NAT) that blocks port forwarding, you’ll need to inquire if they can assign you a dedicated IPv4 address.

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emphasized textcomcast is my isp you know arc used to work fine. What changed ?

Yes i am still using the one acquired in 2020. These instructions are So complicated. Above my pay grade. Isn’t there a simpler way?

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Hello @David_Fenton,

I understand your frustration, and you are absolutely right—those Tailscale instructions are overly complicated.

Let’s forget about them. The most important detail in your post is this: “arc used to work fine.”

The most probable cause is that your Nucleus’s local IP address has changed, and your Netgear Orbi router doesn’t know about it. It’s still sending the ARC request to the old, incorrect address.

Let’s fix this. It’s much simpler than it sounds.

Step-by-Step Guide to Get Roon ARC Working Again

Here is a simple, step-by-step guide. We are just going to check two key places and make sure they match.

Step 1: Find Your Nucleus’s IP Address

We need to know where the router should be sending the traffic.

  1. On your computer or tablet, open the Roon app.
  2. Go to Settings > Setup.
  3. Under your Roon Core (where it says Nucleus), you will see its IP address. It will look something like 192.168.1.X or 10.0.0.X.
  4. Write down or copy these numbers.

Step 2: Check the Port Roon is Trying to Use

  1. In the Roon app, go to Settings > Roon ARC.
  2. You will see the error message, but below (or near) it, you will see the port number. The default is 55000.
  3. Write down this port number.

Step 3: Set Up Port Forwarding on Your Orbi

This is the part that seems intimidating, but we’ll walk through it. We are going to “tell” your router: “Hey, any request that comes in on port 55000, send it directly to my Nucleus at 192.168.1.X.”

  1. On a computer connected to your Orbi network, open a web browser (Chrome, Safari, etc.).
  2. In the address bar, type orbilogin.com or 192.168.1.1 and press Enter.
  3. Log in using your username (usually admin) and your password (if you haven’t changed it, it might be password or printed on a sticker on the router).
  4. Once logged in, find the Advanced tab.
  5. In the Advanced menu, look for the Advanced Setup section.
  6. Click on Port Forwarding / Port Triggering.
  7. Select Port Forwarding (not Triggering).
  8. You will see a list of rules. We need to add a new one. Click Add Custom Service.

Now, fill in the fields:

  • Service Name: Type something you’ll recognize, like RoonARC.
  • Protocol: Select TCP.
  • External Port: Type the port number from Step 2 (probably 55000).
  • Internal Port: Type the same number (probably 55000).
  • Internal IP Address: Type the Nucleus IP address from Step 1 here.

Click the Apply or Save button to save the rule.

Step 4: Test

  1. Go back to the Roon app on your computer.
  2. Go to Settings > Roon ARC.
  3. There should be a message that ARC is available.
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