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Port 1484 (confluent)

IANA assigns port 1484 to confluent: Confluent License Manager.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
confluent TCP Confluent License Manager James Greenfiel -
confluent UDP Confluent License Manager James Greenfiel -

Check what is listening on port 1484

Linux: is anything listening on TCP 1484?
sudo ss -tlnp 'sport = :1484'
Linux: UDP 1484
sudo ss -ulnp 'sport = :1484'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1484
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1484 '
Windows (Command Prompt)
netstat -ano | findstr :1484
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1484 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1484
From Windows
Test-NetConnection HOST -Port 1484
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1484

Block port 1484 in the firewall

ufw
sudo ufw deny 1484/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1484 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1484 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1484' -Direction Inbound -Protocol TCP -LocalPort 1484 -Action Block
ufw
sudo ufw deny 1484/udp
iptables
sudo iptables -A INPUT -p udp --dport 1484 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1484 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1484' -Direction Inbound -Protocol UDP -LocalPort 1484 -Action Block

Related ports

1482miteksys-lm1483afs1485lansource1486nms-topo-serv, nms_topo_serv

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