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Port 3469 (pluribus)

IANA assigns port 3469 to pluribus: Pluribus.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
pluribus TCP Pluribus Mark Miller -
pluribus UDP Pluribus Mark Miller -

Check what is listening on port 3469

Linux: is anything listening on TCP 3469?
sudo ss -tlnp 'sport = :3469'
Linux: UDP 3469
sudo ss -ulnp 'sport = :3469'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3469
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3469 '
Windows (Command Prompt)
netstat -ano | findstr :3469
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3469 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3469
From Windows
Test-NetConnection HOST -Port 3469
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3469

Block port 3469 in the firewall

ufw
sudo ufw deny 3469/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3469 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3469 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3469' -Direction Inbound -Protocol TCP -LocalPort 3469 -Action Block
ufw
sudo ufw deny 3469/udp
iptables
sudo iptables -A INPUT -p udp --dport 3469 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3469 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3469' -Direction Inbound -Protocol UDP -LocalPort 3469 -Action Block

Related ports

3467rcst3468ttcmremotectrl3470jt4003471jt400-ssl

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