CyberHunter
Local dataset, no network
// Other services

Port 4034: Ubiquinox Daemon

Port 4034 is assigned by IANA to ubxd (Ubiquinox Daemon).

4034

How ubxd works

Other services
client:4034ubxdresponse client:4034ubxdresponse

The client sends a request to port 4034 and the ubxd 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 4034 dangerous?

We have no specific security note for port 4034. 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 4034

ServicePortTransportDescriptionReferenceUpdated
ubxd 4034 TCP, UDP Ubiquinox Daemon - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 4034, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4034'      # process listening on 4034
sudo lsof -nP -i :4034

macOS

sudo lsof -nP -i :4034

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4034 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4034
netstat -ano | findstr :4034

From another machine

nmap -p 4034 -sV <host>
sudo nmap -sU -p 4034 <host>
nc -zv <host> 4034

Block it in the firewall

sudo ufw deny 4034/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4034" -Direction Inbound -LocalPort 4034 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4034 used for?

Port 4034 is assigned by IANA to ubxd (Ubiquinox Daemon).

Is port 4034 TCP or UDP?

Port 4034 is registered for TCP and UDP.

Is it safe to open port 4034?

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 4034 is open?

On Linux run "ss -ltnup 'sport = :4034'", on macOS "lsof -nP -i :4034", and on Windows "netstat -ano | findstr :4034" to see the local process. From another machine, "nmap -p 4034 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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