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Port 5464 (quailnet)

IANA assigns port 5464 to quailnet: Quail Networks Object Broker.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
quailnet TCP Quail Networks Object Broker Craig N Bissell -
quailnet UDP Quail Networks Object Broker Craig N Bissell -

Registry dates for this port: registered 2006-04.

Check what is listening on port 5464

Linux: is anything listening on TCP 5464?
sudo ss -tlnp 'sport = :5464'
Linux: UDP 5464
sudo ss -ulnp 'sport = :5464'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5464
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5464 '
Windows (Command Prompt)
netstat -ano | findstr :5464
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5464 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5464
From Windows
Test-NetConnection HOST -Port 5464
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5464

Block port 5464 in the firewall

ufw
sudo ufw deny 5464/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5464 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5464 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5464' -Direction Inbound -Protocol TCP -LocalPort 5464 -Action Block
ufw
sudo ufw deny 5464/udp
iptables
sudo iptables -A INPUT -p udp --dport 5464 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5464 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5464' -Direction Inbound -Protocol UDP -LocalPort 5464 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.