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// Other services

Port 3051: Galaxy Server

Port 3051 is assigned by IANA to galaxy-server (Galaxy Server).

3051

How galaxy-server works

Other services
client:3051galaxy-serverresponse client:3051galaxy-serverresponse

The client sends a request to port 3051 and the galaxy-server 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 3051 dangerous?

We have no specific security note for port 3051. 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 3051

ServicePortTransportDescriptionReferenceUpdated
galaxy-server 3051 TCP, UDP Galaxy Server - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3051, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3051'      # process listening on 3051
sudo lsof -nP -i :3051

macOS

sudo lsof -nP -i :3051

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3051 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3051
netstat -ano | findstr :3051

From another machine

nmap -p 3051 -sV <host>
sudo nmap -sU -p 3051 <host>
nc -zv <host> 3051

Block it in the firewall

sudo ufw deny 3051/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3051" -Direction Inbound -LocalPort 3051 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3051 used for?

Port 3051 is assigned by IANA to galaxy-server (Galaxy Server).

Is port 3051 TCP or UDP?

Port 3051 is registered for TCP and UDP.

Is it safe to open port 3051?

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 3051 is open?

On Linux run "ss -ltnup 'sport = :3051'", on macOS "lsof -nP -i :3051", and on Windows "netstat -ano | findstr :3051" to see the local process. From another machine, "nmap -p 3051 <host>" shows whether it is reachable.

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