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Local dataset, no network
// Other services

Port 17224: Train Realtime Data Protocol (TRDP) Process Data

Port 17224 is assigned by IANA to trdp-pd (Train Realtime Data Protocol (TRDP) Process Data).

17224

How trdp-pd works

Other services
client:17224trdp-pdresponse client:17224trdp-pdresponse

The client sends a request to port 17224 and the trdp-pd service answers.

Transport
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 17224 dangerous?

We have no specific security note for port 17224. 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 17224

ServicePortTransportDescriptionReferenceUpdated
trdp-pd 17224 UDP Train Realtime Data Protocol (TRDP) Process Data - 2015-07-24
-17224-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 17224, and is it reachable?

Linux

sudo ss -ltnup 'sport = :17224'      # process listening on 17224
sudo lsof -nP -i :17224

macOS

sudo lsof -nP -i :17224

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 17224 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 17224
netstat -ano | findstr :17224

From another machine

nmap -p 17224 -sV <host>
sudo nmap -sU -p 17224 <host>
nc -zv <host> 17224

Block it in the firewall

sudo ufw deny 17224/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 17224" -Direction Inbound -LocalPort 17224 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 17224 used for?

Port 17224 is assigned by IANA to trdp-pd (Train Realtime Data Protocol (TRDP) Process Data).

Is port 17224 TCP or UDP?

Port 17224 is registered for UDP.

Is it safe to open port 17224?

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 17224 is open?

On Linux run "ss -ltnup 'sport = :17224'", on macOS "lsof -nP -i :17224", and on Windows "netstat -ano | findstr :17224" to see the local process. From another machine, "nmap -p 17224 <host>" shows whether it is reachable.

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