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// Other services

Port 4359: OMA BCAST Long-Term Key Messages

Port 4359 is assigned by IANA to omabcastltkm (OMA BCAST Long-Term Key Messages).

4359

How omabcastltkm works

Other services
client:4359omabcastltkmresponse client:4359omabcastltkmresponse

The client sends a request to port 4359 and the omabcastltkm 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 4359 dangerous?

We have no specific security note for port 4359. 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 4359

ServicePortTransportDescriptionReferenceUpdated
omabcastltkm 4359 TCP, UDP OMA BCAST Long-Term Key Messages - 2007-09-07

// source: IANA service name and port number registry

03 Check it

Which program uses port 4359, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4359'      # process listening on 4359
sudo lsof -nP -i :4359

macOS

sudo lsof -nP -i :4359

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4359 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4359
netstat -ano | findstr :4359

From another machine

nmap -p 4359 -sV <host>
sudo nmap -sU -p 4359 <host>
nc -zv <host> 4359

Block it in the firewall

sudo ufw deny 4359/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4359" -Direction Inbound -LocalPort 4359 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4359 used for?

Port 4359 is assigned by IANA to omabcastltkm (OMA BCAST Long-Term Key Messages).

Is port 4359 TCP or UDP?

Port 4359 is registered for TCP and UDP.

Is it safe to open port 4359?

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 4359 is open?

On Linux run "ss -ltnup 'sport = :4359'", on macOS "lsof -nP -i :4359", and on Windows "netstat -ano | findstr :4359" to see the local process. From another machine, "nmap -p 4359 <host>" shows whether it is reachable.

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