Port 519
utime · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | utime |
Frequently asked questions
What is port 519 used for?
Port 519 is registered with the IANA for utime (TCP/UDP). Description: unixtime.
Is port 519 a well-known port?
Yes. Port 519 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 519 is open?
Locally on Linux with ss -tulpn | grep ':519\b', on Windows with netstat -ano | findstr :519. To test a remote host use Test-NetConnection <host> -Port 519 in PowerShell or nc -zv <host> 519 on Linux/macOS.
How do I open port 519 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 519/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=519/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 519" -Direction Inbound -Protocol TCP -LocalPort 519 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | utime | unixtime |
| UDP | utime | unixtime |