CyberHunter
Local dataset, no network
// Other services

Port 2453: madge ltd

Port 2453 is assigned by IANA to madge-ltd (madge ltd).

2453

How madge-ltd works

Other services
client:2453madge-ltdresponse client:2453madge-ltdresponse

The client sends a request to port 2453 and the madge-ltd 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 2453 dangerous?

We have no specific security note for port 2453. 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 2453

ServicePortTransportDescriptionReferenceUpdated
madge-ltd 2453 TCP, UDP madge ltd - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2453, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2453'      # process listening on 2453
sudo lsof -nP -i :2453

macOS

sudo lsof -nP -i :2453

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2453 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2453
netstat -ano | findstr :2453

From another machine

nmap -p 2453 -sV <host>
sudo nmap -sU -p 2453 <host>
nc -zv <host> 2453

Block it in the firewall

sudo ufw deny 2453/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2453" -Direction Inbound -LocalPort 2453 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2453 used for?

Port 2453 is assigned by IANA to madge-ltd (madge ltd).

Is port 2453 TCP or UDP?

Port 2453 is registered for TCP and UDP.

Is it safe to open port 2453?

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 2453 is open?

On Linux run "ss -ltnup 'sport = :2453'", on macOS "lsof -nP -i :2453", and on Windows "netstat -ano | findstr :2453" to see the local process. From another machine, "nmap -p 2453 <host>" shows whether it is reachable.

05 Related
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