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Port 1404 (igi-lm)

IANA assigns port 1404 to igi-lm: Infinite Graphics License Manager.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
igi-lm TCP Infinite Graphics License Manager - -
igi-lm UDP Infinite Graphics License Manager - -

Check what is listening on port 1404

Linux: is anything listening on TCP 1404?
sudo ss -tlnp 'sport = :1404'
Linux: UDP 1404
sudo ss -ulnp 'sport = :1404'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1404
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1404 '
Windows (Command Prompt)
netstat -ano | findstr :1404
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1404 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1404
From Windows
Test-NetConnection HOST -Port 1404
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1404

Block port 1404 in the firewall

ufw
sudo ufw deny 1404/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1404 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1404 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1404' -Direction Inbound -Protocol TCP -LocalPort 1404 -Action Block
ufw
sudo ufw deny 1404/udp
iptables
sudo iptables -A INPUT -p udp --dport 1404 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1404 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1404' -Direction Inbound -Protocol UDP -LocalPort 1404 -Action Block

Related ports

1402prm-sm-np1403prm-nm-np1405ibm-res1406netlabs-lm

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