CyberHunter
Local dataset, no network
// Other services

Port 4662: OrbitNet Message Service

Port 4662 is assigned by IANA to oms (OrbitNet Message Service).

4662

How oms works

Other services
client:4662omsresponse client:4662omsresponse

The client sends a request to port 4662 and the oms 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 4662 dangerous?

We have no specific security note for port 4662. 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 4662

ServicePortTransportDescriptionReferenceUpdated
oms 4662 TCP, UDP OrbitNet Message Service - 2005-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 4662, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4662'      # process listening on 4662
sudo lsof -nP -i :4662

macOS

sudo lsof -nP -i :4662

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4662 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4662
netstat -ano | findstr :4662

From another machine

nmap -p 4662 -sV <host>
sudo nmap -sU -p 4662 <host>
nc -zv <host> 4662

Block it in the firewall

sudo ufw deny 4662/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4662" -Direction Inbound -LocalPort 4662 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4662 used for?

Port 4662 is assigned by IANA to oms (OrbitNet Message Service).

Is port 4662 TCP or UDP?

Port 4662 is registered for TCP and UDP.

Is it safe to open port 4662?

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 4662 is open?

On Linux run "ss -ltnup 'sport = :4662'", on macOS "lsof -nP -i :4662", and on Windows "netstat -ano | findstr :4662" to see the local process. From another machine, "nmap -p 4662 <host>" shows whether it is reachable.

05 Related
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