CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Other services

Port 13400: DoIP Data

Port 13400 is assigned by IANA to doip-data (DoIP Data), doip-disc (DoIP Discovery).

13400

How doip-data works

Other services
client:13400doip-dataresponse client:13400doip-dataresponse

The client sends a request to port 13400 and the doip-data service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 13400 dangerous?

We have no specific security note for port 13400. 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 13400

ServicePortTransportDescriptionReferenceUpdated
doip-data 13400 TCP DoIP Data - 2011-01-26
doip-disc 13400 UDP DoIP Discovery - 2011-01-26

// source: IANA service name and port number registry

03 Check it

Which program uses port 13400, and is it reachable?

Linux

sudo ss -ltnup 'sport = :13400'      # process listening on 13400
sudo lsof -nP -i :13400

macOS

sudo lsof -nP -i :13400

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 13400 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 13400
netstat -ano | findstr :13400

From another machine

nmap -p 13400 -sV <host>
sudo nmap -sU -p 13400 <host>
nc -zv <host> 13400

Block it in the firewall

sudo ufw deny 13400/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 13400" -Direction Inbound -LocalPort 13400 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 13400 used for?

Port 13400 is assigned by IANA to doip-data (DoIP Data), doip-disc (DoIP Discovery).

Is port 13400 TCP or UDP?

Port 13400 is registered for TCP and UDP.

Is it safe to open port 13400?

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 13400 is open?

On Linux run "ss -ltnup 'sport = :13400'", on macOS "lsof -nP -i :13400", and on Windows "netstat -ano | findstr :13400" to see the local process. From another machine, "nmap -p 13400 <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

Latest vulnerability news

All news