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Port 30003 (amicon-fpsu-ra)

IANA assigns port 30003 to amicon-fpsu-ra: Amicon FPSU-IP Remote Administration.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
amicon-fpsu-ra TCP Amicon FPSU-IP Remote Administration Amicon OOO -
amicon-fpsu-ra UDP Amicon FPSU-IP Remote Administration Amicon OOO -

Registry dates for this port: registered 2013-04-25.

Check what is listening on port 30003

Linux: is anything listening on TCP 30003?
sudo ss -tlnp 'sport = :30003'
Linux: UDP 30003
sudo ss -ulnp 'sport = :30003'
Linux / macOS: which process owns the port
sudo lsof -nP -i :30003
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':30003 '
Windows (Command Prompt)
netstat -ano | findstr :30003
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 30003 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 30003
From Windows
Test-NetConnection HOST -Port 30003
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 30003

Block port 30003 in the firewall

ufw
sudo ufw deny 30003/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 30003 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 30003 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 30003' -Direction Inbound -Protocol TCP -LocalPort 30003 -Action Block
ufw
sudo ufw deny 30003/udp
iptables
sudo iptables -A INPUT -p udp --dport 30003 -j DROP
nftables
sudo nft add rule inet filter input udp dport 30003 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 30003' -Direction Inbound -Protocol UDP -LocalPort 30003 -Action Block

Related ports

30001pago-services130002pago-services230004amicon-fpsu-s30100rwp

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.