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Port 19000 (igrid)

IANA assigns port 19000 to igrid: iGrid Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
igrid TCP iGrid Server Massimo Cafaro -
igrid UDP iGrid Server Massimo Cafaro -

Registry dates for this port: registered 2004-11.

Check what is listening on port 19000

Linux: is anything listening on TCP 19000?
sudo ss -tlnp 'sport = :19000'
Linux: UDP 19000
sudo ss -ulnp 'sport = :19000'
Linux / macOS: which process owns the port
sudo lsof -nP -i :19000
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':19000 '
Windows (Command Prompt)
netstat -ano | findstr :19000
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 19000 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 19000
From Windows
Test-NetConnection HOST -Port 19000
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 19000

Block port 19000 in the firewall

ufw
sudo ufw deny 19000/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 19000 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 19000 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 19000' -Direction Inbound -Protocol TCP -LocalPort 19000 -Action Block
ufw
sudo ufw deny 19000/udp
iptables
sudo iptables -A INPUT -p udp --dport 19000 -j DROP
nftables
sudo nft add rule inet filter input udp dport 19000 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 19000' -Direction Inbound -Protocol UDP -LocalPort 19000 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.