Port 586
password-chg · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | password-chg |
Frequently asked questions
What is port 586 used for?
Port 586 is registered with the IANA for password-chg (TCP/UDP). Description: Password Change.
Is port 586 a well-known port?
Yes. Port 586 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 586 is open?
Locally on Linux with ss -tulpn | grep ':586\b', on Windows with netstat -ano | findstr :586. To test a remote host use Test-NetConnection <host> -Port 586 in PowerShell or nc -zv <host> 586 on Linux/macOS.
How do I open port 586 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 586/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=586/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 586" -Direction Inbound -Protocol TCP -LocalPort 586 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | password-chg | Password Change |
| UDP | password-chg | Password Change |