Port 536

opalis-rdv · TCP/UDP

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

Frequently asked questions

What is port 536 used for?

Port 536 is registered with the IANA for opalis-rdv (TCP/UDP). Description: opalis-rdv.

Is port 536 a well-known port?

Yes. Port 536 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 536 is open?

Locally on Linux with ss -tulpn | grep ':536\b', on Windows with netstat -ano | findstr :536. To test a remote host use Test-NetConnection <host> -Port 536 in PowerShell or nc -zv <host> 536 on Linux/macOS.

How do I open port 536 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 536/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=536/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 536" -Direction Inbound -Protocol TCP -LocalPort 536 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPopalis-rdvopalis-rdv
UDPopalis-rdvopalis-rdv

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