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// Other services

Port 2066: AVM USB Remote Architecture

Port 2066 is assigned by IANA to aura (AVM USB Remote Architecture).

2066

How aura works

Other services
client:2066auraresponse client:2066auraresponse

The client sends a request to port 2066 and the aura service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 2066 dangerous?

We have no specific security note for port 2066. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 2066

ServicePortTransportDescriptionReferenceUpdated
aura 2066 TCP, UDP AVM USB Remote Architecture - 2006-03

// source: IANA service name and port number registry

03 Check it

Which program uses port 2066, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2066'      # process listening on 2066
sudo lsof -nP -i :2066

macOS

sudo lsof -nP -i :2066

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2066 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2066
netstat -ano | findstr :2066

From another machine

nmap -p 2066 -sV <host>
sudo nmap -sU -p 2066 <host>
nc -zv <host> 2066

Block it in the firewall

sudo ufw deny 2066/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2066" -Direction Inbound -LocalPort 2066 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2066 used for?

Port 2066 is assigned by IANA to aura (AVM USB Remote Architecture).

Is port 2066 TCP or UDP?

Port 2066 is registered for TCP and UDP.

Is it safe to open port 2066?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 2066 is open?

On Linux run "ss -ltnup 'sport = :2066'", on macOS "lsof -nP -i :2066", and on Windows "netstat -ano | findstr :2066" to see the local process. From another machine, "nmap -p 2066 <host>" shows whether it is reachable.

05 Related
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