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// Other services

Port 30003: Amicon FPSU-IP Remote Administration

Port 30003 is assigned by IANA to amicon-fpsu-ra (Amicon FPSU-IP Remote Administration).

30003

How amicon-fpsu-ra works

Other services
client:30003amicon-fpsu-raresponse client:30003amicon-fpsu-raresponse

The client sends a request to port 30003 and the amicon-fpsu-ra 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 30003 dangerous?

We have no specific security note for port 30003. 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 30003

ServicePortTransportDescriptionReferenceUpdated
amicon-fpsu-ra 30003 TCP, UDP Amicon FPSU-IP Remote Administration - 2013-04-25

// source: IANA service name and port number registry

03 Check it

Which program uses port 30003, and is it reachable?

Linux

sudo ss -ltnup 'sport = :30003'      # process listening on 30003
sudo lsof -nP -i :30003

macOS

sudo lsof -nP -i :30003

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 30003 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 30003
netstat -ano | findstr :30003

From another machine

nmap -p 30003 -sV <host>
sudo nmap -sU -p 30003 <host>
nc -zv <host> 30003

Block it in the firewall

sudo ufw deny 30003/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 30003" -Direction Inbound -LocalPort 30003 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 30003 used for?

Port 30003 is assigned by IANA to amicon-fpsu-ra (Amicon FPSU-IP Remote Administration).

Is port 30003 TCP or UDP?

Port 30003 is registered for TCP and UDP.

Is it safe to open port 30003?

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 30003 is open?

On Linux run "ss -ltnup 'sport = :30003'", on macOS "lsof -nP -i :30003", and on Windows "netstat -ano | findstr :30003" to see the local process. From another machine, "nmap -p 30003 <host>" shows whether it is reachable.

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