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Port 4409 (netcabinet-com)

IANA assigns port 4409 to netcabinet-com: Net-Cabinet comunication.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
netcabinet-com TCP Net-Cabinet comunication Ian Manning 2 -

Registry dates for this port: registered 2009-12-16.

Check what is listening on port 4409

Linux: is anything listening on TCP 4409?
sudo ss -tlnp 'sport = :4409'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4409
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4409 '
Windows (Command Prompt)
netstat -ano | findstr :4409
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4409 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4409
From Windows
Test-NetConnection HOST -Port 4409

Block port 4409 in the firewall

ufw
sudo ufw deny 4409/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4409 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4409 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4409' -Direction Inbound -Protocol TCP -LocalPort 4409 -Action Block

Related ports

4407nacagent4408slscc4410itwo-server4411found

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