Port 635
rlzdbase · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | rlzdbase |
Frequently asked questions
What is port 635 used for?
Port 635 is registered with the IANA for rlzdbase (TCP/UDP). Description: RLZ DBase.
Is port 635 a well-known port?
Yes. Port 635 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 635 is open?
Locally on Linux with ss -tulpn | grep ':635\b', on Windows with netstat -ano | findstr :635. To test a remote host use Test-NetConnection <host> -Port 635 in PowerShell or nc -zv <host> 635 on Linux/macOS.
How do I open port 635 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 635/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=635/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 635" -Direction Inbound -Protocol TCP -LocalPort 635 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | rlzdbase | RLZ DBase |
| UDP | rlzdbase | RLZ DBase |