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// Other services

Port 4328: Jaxer Manager Command Protocol

Port 4328 is assigned by IANA to jaxer-manager (Jaxer Manager Command Protocol).

4328

How jaxer-manager works

Other services
client:4328jaxer-managerresponse client:4328jaxer-managerresponse

The client sends a request to port 4328 and the jaxer-manager 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 4328 dangerous?

We have no specific security note for port 4328. 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 4328

ServicePortTransportDescriptionReferenceUpdated
jaxer-manager 4328 TCP, UDP Jaxer Manager Command Protocol - 2008-01-22

// source: IANA service name and port number registry

03 Check it

Which program uses port 4328, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4328'      # process listening on 4328
sudo lsof -nP -i :4328

macOS

sudo lsof -nP -i :4328

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4328 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4328
netstat -ano | findstr :4328

From another machine

nmap -p 4328 -sV <host>
sudo nmap -sU -p 4328 <host>
nc -zv <host> 4328

Block it in the firewall

sudo ufw deny 4328/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4328" -Direction Inbound -LocalPort 4328 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4328 used for?

Port 4328 is assigned by IANA to jaxer-manager (Jaxer Manager Command Protocol).

Is port 4328 TCP or UDP?

Port 4328 is registered for TCP and UDP.

Is it safe to open port 4328?

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 4328 is open?

On Linux run "ss -ltnup 'sport = :4328'", on macOS "lsof -nP -i :4328", and on Windows "netstat -ano | findstr :4328" to see the local process. From another machine, "nmap -p 4328 <host>" shows whether it is reachable.

05 Related
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