Successful Arc port forwarding in Linux

Support ARC: Port Forwarding Resources
1

Roon Server Machine

Beelink Mini PC SEi10 Intel i5-1035G7 16GB DDR4 Ram 1TB NVMe SSD
Linux Debian 12

Networking Gear & Setup Details

Cable modem to TP-Link Deco AXE5400 Tri-Band WiFi 6E Mesh System(Deco XE75 Pro) mesh router with two points

  1. Who is your internet service provider?
    Spectrum
  2. Please list the make and model of your modem and router?
    Spectrum E2251
  3. Do you have any additional network hardware, like additional routers or managed switches?
    No
  4. Does your network have any VPNs, proxy servers, or enterprise-grade security?
    No

Connected Audio Devices

Bluesound Node (USB) wireless
Rasberry Pi running RoPieee (USB) wireless
others

Description of Issue -

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

I was able to finally get Arc to work by:

  1. Enabling port forwarding in Deco router port 55000 UDP and TCP ro IP address of my Roon server
  2. Adding ->sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT<- in linux on my Roon server
    I have disabled ufw because I installed iptables-persistent, it should save your ufw configuration but backups are always wise
    I was only able to do this by standing on the shoulders of Alex_Reusch and Christophe_Saelens in the post Updated ufw configuration (actual state: Roon 1.8 build 952)