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Port 3189 (pcle-infex)

IANA assigns port 3189 to pcle-infex: Pinnacle Sys InfEx Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
pcle-infex TCP Pinnacle Sys InfEx Port Anthon van der Neut -
pcle-infex UDP Pinnacle Sys InfEx Port Anthon van der Neut -

Check what is listening on port 3189

Linux: is anything listening on TCP 3189?
sudo ss -tlnp 'sport = :3189'
Linux: UDP 3189
sudo ss -ulnp 'sport = :3189'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3189
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3189 '
Windows (Command Prompt)
netstat -ano | findstr :3189
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3189 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3189
From Windows
Test-NetConnection HOST -Port 3189
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3189

Block port 3189 in the firewall

ufw
sudo ufw deny 3189/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3189 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3189 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3189' -Direction Inbound -Protocol TCP -LocalPort 3189 -Action Block
ufw
sudo ufw deny 3189/udp
iptables
sudo iptables -A INPUT -p udp --dport 3189 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3189 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3189' -Direction Inbound -Protocol UDP -LocalPort 3189 -Action Block

Related ports

3187odi-port3188brcm-comm-port3190csvr-proxy3191csvr-sslproxy

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