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// Other services

Port 140: EMFIS Data Service

Port 140 is assigned by IANA to emfis-data (EMFIS Data Service).

140

How emfis-data works

Other services
client:140emfis-dataresponse client:140emfis-dataresponse

The client sends a request to port 140 and the emfis-data 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 140 dangerous?

We have no specific security note for port 140. 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 140

ServicePortTransportDescriptionReferenceUpdated
emfis-data 140 TCP, UDP EMFIS Data Service - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 140, and is it reachable?

Linux

sudo ss -ltnup 'sport = :140'      # process listening on 140
sudo lsof -nP -i :140

macOS

sudo lsof -nP -i :140

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 140 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 140
netstat -ano | findstr :140

From another machine

nmap -p 140 -sV <host>
sudo nmap -sU -p 140 <host>
nc -zv <host> 140

Block it in the firewall

sudo ufw deny 140/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 140" -Direction Inbound -LocalPort 140 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 140 used for?

Port 140 is assigned by IANA to emfis-data (EMFIS Data Service).

Is port 140 TCP or UDP?

Port 140 is registered for TCP and UDP.

Is it safe to open port 140?

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 140 is open?

On Linux run "ss -ltnup 'sport = :140'", on macOS "lsof -nP -i :140", and on Windows "netstat -ano | findstr :140" to see the local process. From another machine, "nmap -p 140 <host>" shows whether it is reachable.

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