Port 493
ticf-2 · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | ticf-2 |
Frequently asked questions
What is port 493 used for?
Port 493 is registered with the IANA for ticf-2 (TCP/UDP). Description: Transport Independent Convergence for FNA.
Is port 493 a well-known port?
Yes. Port 493 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 493 is open?
Locally on Linux with ss -tulpn | grep ':493\b', on Windows with netstat -ano | findstr :493. To test a remote host use Test-NetConnection <host> -Port 493 in PowerShell or nc -zv <host> 493 on Linux/macOS.
How do I open port 493 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 493/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=493/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 493" -Direction Inbound -Protocol TCP -LocalPort 493 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | ticf-2 | Transport Independent Convergence for FNA |
| UDP | ticf-2 | Transport Independent Convergence for FNA |