Port 163
cmip-man · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | cmip-man |
Frequently asked questions
What is port 163 used for?
Port 163 is registered with the IANA for cmip-man (TCP/UDP). Description: CMIP/TCP Manager.
Is port 163 a well-known port?
Yes. Port 163 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 163 is open?
Locally on Linux with ss -tulpn | grep ':163\b', on Windows with netstat -ano | findstr :163. To test a remote host use Test-NetConnection <host> -Port 163 in PowerShell or nc -zv <host> 163 on Linux/macOS.
How do I open port 163 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 163/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=163/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 163" -Direction Inbound -Protocol TCP -LocalPort 163 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | cmip-man | CMIP/TCP Manager |
| UDP | cmip-man | CMIP/TCP Manager |