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// Other services

Port 4792: IP Routable Unified Bus

Port 4792 is assigned by IANA to unified-bus (IP Routable Unified Bus).

4792

How unified-bus works

Other services
client:4792unified-busresponse client:4792unified-busresponse

The client sends a request to port 4792 and the unified-bus 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 4792 dangerous?

We have no specific security note for port 4792. 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 4792

ServicePortTransportDescriptionReferenceUpdated
unified-bus 4792 TCP, UDP IP Routable Unified Bus - 2023-04-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 4792, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4792'      # process listening on 4792
sudo lsof -nP -i :4792

macOS

sudo lsof -nP -i :4792

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4792 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4792
netstat -ano | findstr :4792

From another machine

nmap -p 4792 -sV <host>
sudo nmap -sU -p 4792 <host>
nc -zv <host> 4792

Block it in the firewall

sudo ufw deny 4792/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4792" -Direction Inbound -LocalPort 4792 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4792 used for?

Port 4792 is assigned by IANA to unified-bus (IP Routable Unified Bus).

Is port 4792 TCP or UDP?

Port 4792 is registered for TCP and UDP.

Is it safe to open port 4792?

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 4792 is open?

On Linux run "ss -ltnup 'sport = :4792'", on macOS "lsof -nP -i :4792", and on Windows "netstat -ano | findstr :4792" to see the local process. From another machine, "nmap -p 4792 <host>" shows whether it is reachable.

05 Related
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