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// Other services

Port 3829: Netadmin Systems Event Handler External

Port 3829 is assigned by IANA to neteh-ext (Netadmin Systems Event Handler External).

3829

How neteh-ext works

Other services
client:3829neteh-extresponse client:3829neteh-extresponse

The client sends a request to port 3829 and the neteh-ext 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 3829 dangerous?

We have no specific security note for port 3829. 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 3829

ServicePortTransportDescriptionReferenceUpdated
neteh-ext 3829 TCP, UDP Netadmin Systems Event Handler External - 2007-07-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 3829, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3829'      # process listening on 3829
sudo lsof -nP -i :3829

macOS

sudo lsof -nP -i :3829

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3829 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3829
netstat -ano | findstr :3829

From another machine

nmap -p 3829 -sV <host>
sudo nmap -sU -p 3829 <host>
nc -zv <host> 3829

Block it in the firewall

sudo ufw deny 3829/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3829" -Direction Inbound -LocalPort 3829 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3829 used for?

Port 3829 is assigned by IANA to neteh-ext (Netadmin Systems Event Handler External).

Is port 3829 TCP or UDP?

Port 3829 is registered for TCP and UDP.

Is it safe to open port 3829?

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 3829 is open?

On Linux run "ss -ltnup 'sport = :3829'", on macOS "lsof -nP -i :3829", and on Windows "netstat -ano | findstr :3829" to see the local process. From another machine, "nmap -p 3829 <host>" shows whether it is reachable.

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