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// Other services

Port 2398: Orbiter

Port 2398 is assigned by IANA to orbiter (Orbiter).

2398

How orbiter works

Other services
client:2398orbiterresponse client:2398orbiterresponse

The client sends a request to port 2398 and the orbiter 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 2398 dangerous?

We have no specific security note for port 2398. 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 2398

ServicePortTransportDescriptionReferenceUpdated
orbiter 2398 TCP, UDP Orbiter - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2398, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2398'      # process listening on 2398
sudo lsof -nP -i :2398

macOS

sudo lsof -nP -i :2398

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2398 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2398
netstat -ano | findstr :2398

From another machine

nmap -p 2398 -sV <host>
sudo nmap -sU -p 2398 <host>
nc -zv <host> 2398

Block it in the firewall

sudo ufw deny 2398/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2398" -Direction Inbound -LocalPort 2398 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2398 used for?

Port 2398 is assigned by IANA to orbiter (Orbiter).

Is port 2398 TCP or UDP?

Port 2398 is registered for TCP and UDP.

Is it safe to open port 2398?

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 2398 is open?

On Linux run "ss -ltnup 'sport = :2398'", on macOS "lsof -nP -i :2398", and on Windows "netstat -ano | findstr :2398" to see the local process. From another machine, "nmap -p 2398 <host>" shows whether it is reachable.

05 Related
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