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// Other services

Port 94: Tivoli Object Dispatcher

Port 94 is assigned by IANA to objcall (Tivoli Object Dispatcher).

94

How objcall works

Other services
client:94objcallresponse client:94objcallresponse

The client sends a request to port 94 and the objcall 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 94 dangerous?

We have no specific security note for port 94. 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 94

ServicePortTransportDescriptionReferenceUpdated
objcall 94 TCP, UDP Tivoli Object Dispatcher - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 94, and is it reachable?

Linux

sudo ss -ltnup 'sport = :94'      # process listening on 94
sudo lsof -nP -i :94

macOS

sudo lsof -nP -i :94

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 94 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 94
netstat -ano | findstr :94

From another machine

nmap -p 94 -sV <host>
sudo nmap -sU -p 94 <host>
nc -zv <host> 94

Block it in the firewall

sudo ufw deny 94/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 94" -Direction Inbound -LocalPort 94 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 94 used for?

Port 94 is assigned by IANA to objcall (Tivoli Object Dispatcher).

Is port 94 TCP or UDP?

Port 94 is registered for TCP and UDP.

Is it safe to open port 94?

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 94 is open?

On Linux run "ss -ltnup 'sport = :94'", on macOS "lsof -nP -i :94", and on Windows "netstat -ano | findstr :94" to see the local process. From another machine, "nmap -p 94 <host>" shows whether it is reachable.

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