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Port 1589 (vqp)

IANA assigns port 1589 to vqp: VQP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
vqp TCP VQP Keith McCloghrie -
vqp UDP VQP Keith McCloghrie -

Check what is listening on port 1589

Linux: is anything listening on TCP 1589?
sudo ss -tlnp 'sport = :1589'
Linux: UDP 1589
sudo ss -ulnp 'sport = :1589'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1589
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1589 '
Windows (Command Prompt)
netstat -ano | findstr :1589
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1589 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1589
From Windows
Test-NetConnection HOST -Port 1589
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1589

Block port 1589 in the firewall

ufw
sudo ufw deny 1589/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1589 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1589 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1589' -Direction Inbound -Protocol TCP -LocalPort 1589 -Action Block
ufw
sudo ufw deny 1589/udp
iptables
sudo iptables -A INPUT -p udp --dport 1589 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1589 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1589' -Direction Inbound -Protocol UDP -LocalPort 1589 -Action Block

Related ports

1587pra-elmd, pra_elmd1588triquest-lm1590gemini-lm1591ncpm-pm

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