Port 4361
nacnl · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | nacnl |
| Registered | 2009-03-18 |
Frequently asked questions
What is port 4361 used for?
Port 4361 is registered with the IANA for nacnl (TCP/UDP). Description: Reserved; NavCom Discovery and Control Port.
Is port 4361 a well-known port?
No. Port 4361 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 4361 is open?
Locally on Linux with ss -tulpn | grep ':4361\b', on Windows with netstat -ano | findstr :4361. To test a remote host use Test-NetConnection <host> -Port 4361 in PowerShell or nc -zv <host> 4361 on Linux/macOS.
How do I open port 4361 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 4361/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4361/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4361" -Direction Inbound -Protocol TCP -LocalPort 4361 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | – | Reserved |
| UDP | nacnl | NavCom Discovery and Control Port |