· None of these are listed. It simply says "TIMEDOUT" or similar.
System or third-party *firewalls *or *antivirus software* can sometimes block RoonServer from reaching ARC.
· Try adding RoonServer and its associated processes to the whitelist of any firewalls or antivirus software you have installed, including the Windows system firewall, if applicable. [You can learn more about firewall exceptions with Roon here.](https://help.roonlabs.com/portal/en/kb/articles/firewall)
Has the status in Roon -> Settings -> ARC changed after adding exceptions in your firewalls and antivirus software for Roon? ARC is still *Not Ready*
Don't give up yet.
· I'm stuck. I'd like to create a post to ask Roon Community for help.
Describe the issue
Unable to access roon server on roon arc - ubiquiti dream router
Describe your network setup
isp - AT&T uverse Ubiquiti dream router Roon Nucleus One as roon server Arc running on apple iphone
I have read other posts and followed instructions. Even after configuring network settings and port forwarding settings, I am still unable to access the roon server.
You have two subnets. Given the external IP address, I’m thinking your ISP may use CGNAT. Therefore, please share details of your ISP, and all your connected network devices.
The clue here is the “MultiNATFound” element in the diagnostics text. This mean that either you have two or more routers in your local network or your ISP is using CG-NAT to give you an ip address (or both).
Reading around, it appears that AT&T U-Verse do indeed use CG-NAT. This being the case, you can not fix the issue using the port forwarding setup of your router alone. Instead you have two options:
Contact AT&T and ask for a public IP address that supports port forwarding. They will probably offer you a static ip address and they will probably charge an additional monthly fee for the use of that static ip address - I have seen some reports that it is $15/month.
Use Tailscale to bypass the need to use port forwarding at all. Using Tailscale you can set up a VPN such that remote hosts appear to be on the same local network as the remote server and thus they avoid the need to have port forwarding setup on your router (and also avoid the issues with CG-NAT).
Assuming that you opt for the Tailscale, there is a guide in the Roon Help Centre at:
Note: The VPN solution can be achieved with other VPN products as well (Wireguard, OpenVPN and others) but I have suggested Tailscale because it is the solution that is officially sanctioned and supported by Roon.
Note also: Once you have got your Tailscale (or other VPN) solution up and working, the Roon ARC settings page will continue to report “Not Ready” and will continue to report the ‘MultipleNATFound’. This is expected because you have not ‘fixed’ the port forwarding. You have just made it unnecessary to get port forwarding to work.
Use the inbuilt VPN of your router called Teleport and download the Ubiquiti Wifiman app. This will then allow a secure VPN between your phone with ARC on and your Roon server. This circumvents CGNAT and any port forwarding and allows ARC to function.
Hi @Lindon_Shiao,
Thanks for reaching out to us about this issue. The users above gave some good suggestions for resolving this. If you still have issues after trying these ideas please let us know and we will continue troubleshooting.
Hi crystalgipsy. i downloaded wifiman and established teleport to establish vpn between phone and roon server. however, i am still unable to get arc to function. do i need to remove port forwarding… i did and arc still not working.
First I would check if ARC works when your on you home WiFi network without teleport active?
On the dream router ensure that your roon server is assigned a fixed/reserved ip address. You do this by clicking onto the device in the UniFi app and then then settings cog will give you the option.
What is the device you’re using to Run ARC on? Perhaps remove it and try again. ARC is known to have connection issues with some Android devices.
It should just work without any issues if you can connect via teleport.
Ignore what that message says when using any sort of VPN as it will always fail as only the device with VPN can connect and Roons servees are trying to connect to it which they can’t. It’s only relevant if using port forward. You don’t need port forwarding at all when using teleport.
When teleport is active ARC should connect back to your server. And Roon serves connect to ARC. Show what ARC says.
You 100% sure when on your phone that Teleport is working and connected back to your home? Have you removed ARC and installed it again?
It maybe your provider has added some extra security if you can’t get it to work I would contact them and ask for advice.
The steps other users have provided above are all accurate in this setup - the port test often misleads when connected via VPN, since it doesn’t test for these specific conditions.
Please verify that with the fixed/reserved IP address in the UniFi app, you can access ARC with Wifi disabled on the phone.
