CyberHunter
Local dataset, no network
// Other services

Port 1117: ARDUS Multicast Transfer

Port 1117 is assigned by IANA to ardus-mtrns (ARDUS Multicast Transfer).

1117

How ardus-mtrns works

Other services
client:1117ardus-mtrnsresponse client:1117ardus-mtrnsresponse

The client sends a request to port 1117 and the ardus-mtrns 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 1117 dangerous?

We have no specific security note for port 1117. 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 1117

ServicePortTransportDescriptionReferenceUpdated
ardus-mtrns 1117 TCP, UDP ARDUS Multicast Transfer - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1117, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1117'      # process listening on 1117
sudo lsof -nP -i :1117

macOS

sudo lsof -nP -i :1117

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1117 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1117
netstat -ano | findstr :1117

From another machine

nmap -p 1117 -sV <host>
sudo nmap -sU -p 1117 <host>
nc -zv <host> 1117

Block it in the firewall

sudo ufw deny 1117/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1117" -Direction Inbound -LocalPort 1117 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1117 used for?

Port 1117 is assigned by IANA to ardus-mtrns (ARDUS Multicast Transfer).

Is port 1117 TCP or UDP?

Port 1117 is registered for TCP and UDP.

Is it safe to open port 1117?

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 1117 is open?

On Linux run "ss -ltnup 'sport = :1117'", on macOS "lsof -nP -i :1117", and on Windows "netstat -ano | findstr :1117" to see the local process. From another machine, "nmap -p 1117 <host>" shows whether it is reachable.

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