Port 584

keyserver · TCP/UDP

RangeSystem/well-known port (0–1023)
ProtocolTCP/UDP
Servicekeyserver

Frequently asked questions

What is port 584 used for?

Port 584 is registered with the IANA for keyserver (TCP/UDP). Description: Key Server.

Is port 584 a well-known port?

Yes. Port 584 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.

How do I check whether port 584 is open?

Locally on Linux with ss -tulpn | grep ':584\b', on Windows with netstat -ano | findstr :584. To test a remote host use Test-NetConnection <host> -Port 584 in PowerShell or nc -zv <host> 584 on Linux/macOS.

How do I open port 584 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 584/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=584/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 584" -Direction Inbound -Protocol TCP -LocalPort 584 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPkeyserverKey Server
UDPkeyserverKey Server

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