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

Port 4140: Cedros Fraud Detection System

Port 4140 is assigned by IANA to cedros_fds (Cedros Fraud Detection System), cedros-fds (Cedros Fraud Detection System IANA assigned this well-formed service name as a replacement for "cedros_fds".).

4140

How cedros_fds works

Other services
client:4140cedros_fdsresponse client:4140cedros_fdsresponse

The client sends a request to port 4140 and the cedros_fds 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 4140 dangerous?

We have no specific security note for port 4140. 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 4140

ServicePortTransportDescriptionReferenceUpdated
cedros_fds 4140 TCP, UDP Cedros Fraud Detection System - 2006-10
cedros-fds 4140 TCP, UDP Cedros Fraud Detection System IANA assigned this well-formed service name as a replacement for "cedros_fds". - 2006-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 4140, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4140'      # process listening on 4140
sudo lsof -nP -i :4140

macOS

sudo lsof -nP -i :4140

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4140 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4140
netstat -ano | findstr :4140

From another machine

nmap -p 4140 -sV <host>
sudo nmap -sU -p 4140 <host>
nc -zv <host> 4140

Block it in the firewall

sudo ufw deny 4140/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4140" -Direction Inbound -LocalPort 4140 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4140 used for?

Port 4140 is assigned by IANA to cedros_fds (Cedros Fraud Detection System), cedros-fds (Cedros Fraud Detection System IANA assigned this well-formed service name as a replacement for "cedros_fds".).

Is port 4140 TCP or UDP?

Port 4140 is registered for TCP and UDP.

Is it safe to open port 4140?

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 4140 is open?

On Linux run "ss -ltnup 'sport = :4140'", on macOS "lsof -nP -i :4140", and on Windows "netstat -ano | findstr :4140" to see the local process. From another machine, "nmap -p 4140 <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