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// Other services

Port 2124: ELATELINK

Port 2124 is assigned by IANA to elatelink (ELATELINK).

2124

How elatelink works

Other services
client:2124elatelinkresponse client:2124elatelinkresponse

The client sends a request to port 2124 and the elatelink 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 2124 dangerous?

We have no specific security note for port 2124. 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 2124

ServicePortTransportDescriptionReferenceUpdated
elatelink 2124 TCP, UDP ELATELINK - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2124, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2124'      # process listening on 2124
sudo lsof -nP -i :2124

macOS

sudo lsof -nP -i :2124

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2124 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2124
netstat -ano | findstr :2124

From another machine

nmap -p 2124 -sV <host>
sudo nmap -sU -p 2124 <host>
nc -zv <host> 2124

Block it in the firewall

sudo ufw deny 2124/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2124" -Direction Inbound -LocalPort 2124 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2124 used for?

Port 2124 is assigned by IANA to elatelink (ELATELINK).

Is port 2124 TCP or UDP?

Port 2124 is registered for TCP and UDP.

Is it safe to open port 2124?

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 2124 is open?

On Linux run "ss -ltnup 'sport = :2124'", on macOS "lsof -nP -i :2124", and on Windows "netstat -ano | findstr :2124" to see the local process. From another machine, "nmap -p 2124 <host>" shows whether it is reachable.

05 Related
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