Port 571
meter · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | meter |
Frequently asked questions
What is port 571 used for?
Port 571 is registered with the IANA for meter (TCP/UDP). Description: udemon.
Is port 571 a well-known port?
Yes. Port 571 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 571 is open?
Locally on Linux with ss -tulpn | grep ':571\b', on Windows with netstat -ano | findstr :571. To test a remote host use Test-NetConnection <host> -Port 571 in PowerShell or nc -zv <host> 571 on Linux/macOS.
How do I open port 571 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 571/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=571/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 571" -Direction Inbound -Protocol TCP -LocalPort 571 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | meter | udemon |
| UDP | meter | udemon |