CyberHunter
Local dataset, no network
// Other services

Port 24003: med-supp

Port 24003 is assigned by IANA to med-supp (med-supp).

24003

How med-supp works

Other services
client:24003med-suppresponse client:24003med-suppresponse

The client sends a request to port 24003 and the med-supp 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 24003 dangerous?

We have no specific security note for port 24003. 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 24003

ServicePortTransportDescriptionReferenceUpdated
med-supp 24003 TCP, UDP med-supp - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 24003, and is it reachable?

Linux

sudo ss -ltnup 'sport = :24003'      # process listening on 24003
sudo lsof -nP -i :24003

macOS

sudo lsof -nP -i :24003

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 24003 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 24003
netstat -ano | findstr :24003

From another machine

nmap -p 24003 -sV <host>
sudo nmap -sU -p 24003 <host>
nc -zv <host> 24003

Block it in the firewall

sudo ufw deny 24003/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 24003" -Direction Inbound -LocalPort 24003 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 24003 used for?

Port 24003 is assigned by IANA to med-supp (med-supp).

Is port 24003 TCP or UDP?

Port 24003 is registered for TCP and UDP.

Is it safe to open port 24003?

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 24003 is open?

On Linux run "ss -ltnup 'sport = :24003'", on macOS "lsof -nP -i :24003", and on Windows "netstat -ano | findstr :24003" to see the local process. From another machine, "nmap -p 24003 <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

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