Port 146
iso-tp0 · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | iso-tp0 |
Frequently asked questions
What is port 146 used for?
Port 146 is registered with the IANA for iso-tp0 (TCP/UDP). Description: ISO-IP0.
Is port 146 a well-known port?
Yes. Port 146 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 146 is open?
Locally on Linux with ss -tulpn | grep ':146\b', on Windows with netstat -ano | findstr :146. To test a remote host use Test-NetConnection <host> -Port 146 in PowerShell or nc -zv <host> 146 on Linux/macOS.
How do I open port 146 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 146/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=146/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 146" -Direction Inbound -Protocol TCP -LocalPort 146 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | iso-tp0 | ISO-IP0 |
| UDP | iso-tp0 | ISO-IP0 |