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// Other services

Port 19398: mtrgtrans

Port 19398 is assigned by IANA to mtrgtrans (mtrgtrans).

19398

How mtrgtrans works

Other services
client:19398mtrgtransresponse client:19398mtrgtransresponse

The client sends a request to port 19398 and the mtrgtrans 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 19398 dangerous?

We have no specific security note for port 19398. 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 19398

ServicePortTransportDescriptionReferenceUpdated
mtrgtrans 19398 TCP, UDP mtrgtrans - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 19398, and is it reachable?

Linux

sudo ss -ltnup 'sport = :19398'      # process listening on 19398
sudo lsof -nP -i :19398

macOS

sudo lsof -nP -i :19398

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 19398 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 19398
netstat -ano | findstr :19398

From another machine

nmap -p 19398 -sV <host>
sudo nmap -sU -p 19398 <host>
nc -zv <host> 19398

Block it in the firewall

sudo ufw deny 19398/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 19398" -Direction Inbound -LocalPort 19398 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 19398 used for?

Port 19398 is assigned by IANA to mtrgtrans (mtrgtrans).

Is port 19398 TCP or UDP?

Port 19398 is registered for TCP and UDP.

Is it safe to open port 19398?

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 19398 is open?

On Linux run "ss -ltnup 'sport = :19398'", on macOS "lsof -nP -i :19398", and on Windows "netstat -ano | findstr :19398" to see the local process. From another machine, "nmap -p 19398 <host>" shows whether it is reachable.

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