Port 17225Train Real-time Data Protocol (TRDP) Message Data

TRDP Message Data carries request/reply and notification messages between devices on train communication networks.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 5/10
lookups: 0

also known as trdp-md, IEC 61375 TRDP-MD

Technical Details

what runs on :17225

TRDP, standardized in the IEC 61375 train communication family, provides Message Data (MD) alongside its Process Data service. MD can use TCP or UDP; 17225 is its default port, while TRDP Process Data commonly uses UDP port 17224. MD supports message exchanges such as requests and replies, with TRDP headers and length information framing messages (including messages carried over TCP streams).

Security Information

exposure of :17225

risk score

5/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

network services averages 2.6 across 1,922 ports — this one sits 2.4 above.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Base TRDP does not provide encryption or authentication, so messages may be readable or forgeable by an attacker with access to the train network. Keep the service within appropriately segmented, controlled operational networks; it should not be exposed to the public internet. Internet-wide scans have not observed it open in the supplied scan data.

Record

iana registry entry

port: :17225
service: Train Real-time Data Protocol (TRDP) Message Data
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 5/10caution
category: Network Services System
usage: This is the IANA-assigned port for TRDP Message Data, used by equipment communicating over train communication networks. Engineers may encounter it on rolling-stock control and monitoring devices; it is not a common general-purpose internet service.
lookups: 0rank 993
added: 2026-10-18
updated: 2026-10-18
references: IANA service name registry — port 17225

Something wrong?

This record is maintained by the engineers who use port 17225. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-18.

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edit this record →back to the registry

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :17225Train Real-time Data Protocol (TRDP) Message Data

Technical Details

Security Information

Related Ports

Port 17225Train Real-time Data Protocol (TRDP) Message Data