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// Other services

Port 1116: ARDUS Control

Port 1116 is assigned by IANA to ardus-cntl (ARDUS Control).

1116

How ardus-cntl works

Other services
client:1116ardus-cntlresponse client:1116ardus-cntlresponse

The client sends a request to port 1116 and the ardus-cntl 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 1116 dangerous?

We have no specific security note for port 1116. 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 1116

ServicePortTransportDescriptionReferenceUpdated
ardus-cntl 1116 TCP, UDP ARDUS Control - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1116, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1116'      # process listening on 1116
sudo lsof -nP -i :1116

macOS

sudo lsof -nP -i :1116

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1116 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1116
netstat -ano | findstr :1116

From another machine

nmap -p 1116 -sV <host>
sudo nmap -sU -p 1116 <host>
nc -zv <host> 1116

Block it in the firewall

sudo ufw deny 1116/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1116" -Direction Inbound -LocalPort 1116 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1116 used for?

Port 1116 is assigned by IANA to ardus-cntl (ARDUS Control).

Is port 1116 TCP or UDP?

Port 1116 is registered for TCP and UDP.

Is it safe to open port 1116?

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 1116 is open?

On Linux run "ss -ltnup 'sport = :1116'", on macOS "lsof -nP -i :1116", and on Windows "netstat -ano | findstr :1116" to see the local process. From another machine, "nmap -p 1116 <host>" shows whether it is reachable.

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