Port 5604

a3-sdunode · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicea3-sdunode

Frequently asked questions

What is port 5604 used for?

Port 5604 is registered with the IANA for a3-sdunode (TCP/UDP). Description: A3-SDUNode.

Is port 5604 a well-known port?

No. Port 5604 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 5604 is open?

Locally on Linux with ss -tulpn | grep ':5604\b', on Windows with netstat -ano | findstr :5604. To test a remote host use Test-NetConnection <host> -Port 5604 in PowerShell or nc -zv <host> 5604 on Linux/macOS.

How do I open port 5604 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 5604/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5604/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5604" -Direction Inbound -Protocol TCP -LocalPort 5604 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPa3-sdunodeA3-SDUNode
UDPa3-sdunodeA3-SDUNode

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