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// Other services

Port 244: inbusiness

Port 244 is assigned by IANA to inbusiness (inbusiness).

244

How inbusiness works

Other services
client:244inbusinessresponse client:244inbusinessresponse

The client sends a request to port 244 and the inbusiness 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 244 dangerous?

We have no specific security note for port 244. 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 244

ServicePortTransportDescriptionReferenceUpdated
inbusiness 244 TCP, UDP inbusiness - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 244, and is it reachable?

Linux

sudo ss -ltnup 'sport = :244'      # process listening on 244
sudo lsof -nP -i :244

macOS

sudo lsof -nP -i :244

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 244 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 244
netstat -ano | findstr :244

From another machine

nmap -p 244 -sV <host>
sudo nmap -sU -p 244 <host>
nc -zv <host> 244

Block it in the firewall

sudo ufw deny 244/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 244" -Direction Inbound -LocalPort 244 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 244 used for?

Port 244 is assigned by IANA to inbusiness (inbusiness).

Is port 244 TCP or UDP?

Port 244 is registered for TCP and UDP.

Is it safe to open port 244?

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 244 is open?

On Linux run "ss -ltnup 'sport = :244'", on macOS "lsof -nP -i :244", and on Windows "netstat -ano | findstr :244" to see the local process. From another machine, "nmap -p 244 <host>" shows whether it is reachable.

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