CyberHunter
Local dataset, no network
// Other services

Port 4346: ELAN LM

Port 4346 is assigned by IANA to elanlm (ELAN LM).

4346

How elanlm works

Other services
client:4346elanlmresponse client:4346elanlmresponse

The client sends a request to port 4346 and the elanlm 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 4346 dangerous?

We have no specific security note for port 4346. 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 4346

ServicePortTransportDescriptionReferenceUpdated
elanlm 4346 TCP, UDP ELAN LM - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 4346, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4346'      # process listening on 4346
sudo lsof -nP -i :4346

macOS

sudo lsof -nP -i :4346

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4346 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4346
netstat -ano | findstr :4346

From another machine

nmap -p 4346 -sV <host>
sudo nmap -sU -p 4346 <host>
nc -zv <host> 4346

Block it in the firewall

sudo ufw deny 4346/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4346" -Direction Inbound -LocalPort 4346 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4346 used for?

Port 4346 is assigned by IANA to elanlm (ELAN LM).

Is port 4346 TCP or UDP?

Port 4346 is registered for TCP and UDP.

Is it safe to open port 4346?

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 4346 is open?

On Linux run "ss -ltnup 'sport = :4346'", on macOS "lsof -nP -i :4346", and on Windows "netstat -ano | findstr :4346" to see the local process. From another machine, "nmap -p 4346 <host>" shows whether it is reachable.

05 Related
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