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// Other services

Port 424: IBM Operations Planning and Control Track

Port 424 is assigned by IANA to opc-job-track (IBM Operations Planning and Control Track).

424

How opc-job-track works

Other services
client:424opc-job-trackresponse client:424opc-job-trackresponse

The client sends a request to port 424 and the opc-job-track 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 424 dangerous?

We have no specific security note for port 424. 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 424

ServicePortTransportDescriptionReferenceUpdated
opc-job-track 424 TCP, UDP IBM Operations Planning and Control Track - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 424, and is it reachable?

Linux

sudo ss -ltnup 'sport = :424'      # process listening on 424
sudo lsof -nP -i :424

macOS

sudo lsof -nP -i :424

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 424 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 424
netstat -ano | findstr :424

From another machine

nmap -p 424 -sV <host>
sudo nmap -sU -p 424 <host>
nc -zv <host> 424

Block it in the firewall

sudo ufw deny 424/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 424" -Direction Inbound -LocalPort 424 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 424 used for?

Port 424 is assigned by IANA to opc-job-track (IBM Operations Planning and Control Track).

Is port 424 TCP or UDP?

Port 424 is registered for TCP and UDP.

Is it safe to open port 424?

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 424 is open?

On Linux run "ss -ltnup 'sport = :424'", on macOS "lsof -nP -i :424", and on Windows "netstat -ano | findstr :424" to see the local process. From another machine, "nmap -p 424 <host>" shows whether it is reachable.

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