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// Other services

Port 4183: CyborgNet communications protocol

Port 4183 is assigned by IANA to cyborgnet (CyborgNet communications protocol).

4183

How cyborgnet works

Other services
client:4183cyborgnetresponse client:4183cyborgnetresponse

The client sends a request to port 4183 and the cyborgnet 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 4183 dangerous?

We have no specific security note for port 4183. 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 4183

ServicePortTransportDescriptionReferenceUpdated
cyborgnet 4183 TCP, UDP CyborgNet communications protocol - 2015-11-13

// source: IANA service name and port number registry

03 Check it

Which program uses port 4183, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4183'      # process listening on 4183
sudo lsof -nP -i :4183

macOS

sudo lsof -nP -i :4183

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4183 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4183
netstat -ano | findstr :4183

From another machine

nmap -p 4183 -sV <host>
sudo nmap -sU -p 4183 <host>
nc -zv <host> 4183

Block it in the firewall

sudo ufw deny 4183/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4183" -Direction Inbound -LocalPort 4183 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4183 used for?

Port 4183 is assigned by IANA to cyborgnet (CyborgNet communications protocol).

Is port 4183 TCP or UDP?

Port 4183 is registered for TCP and UDP.

Is it safe to open port 4183?

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 4183 is open?

On Linux run "ss -ltnup 'sport = :4183'", on macOS "lsof -nP -i :4183", and on Windows "netstat -ano | findstr :4183" to see the local process. From another machine, "nmap -p 4183 <host>" shows whether it is reachable.

05 Related
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