Port 10103
ezrelay · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | ezrelay |
| Registered | 2002-03 |
Frequently asked questions
What is port 10103 used for?
Port 10103 is registered with the IANA for ezrelay (TCP/UDP). Description: eZrelay.
Is port 10103 a well-known port?
No. Port 10103 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 10103 is open?
Locally on Linux with ss -tulpn | grep ':10103\b', on Windows with netstat -ano | findstr :10103. To test a remote host use Test-NetConnection <host> -Port 10103 in PowerShell or nc -zv <host> 10103 on Linux/macOS.
How do I open port 10103 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 10103/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=10103/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 10103" -Direction Inbound -Protocol TCP -LocalPort 10103 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | ezrelay | eZrelay |
| UDP | ezrelay | eZrelay |