File Transfer Protocol data channel. Used alongside port 21 for active FTP transfers.
Test it now with our Port Scanner
| Port | 20 |
|---|---|
| Service | FTP Data |
| Protocol | TCP |
| Encrypted | No |
| Common Use | File Transfer Protocol data channel |
Online: Use our Port Scanner — enter your IP and port 20.
Command line:
nc -zv your-server-ip 20 (Mac/Linux)
Test-NetConnection -ComputerName your-server-ip -Port 20 (PowerShell)
Check locally:
ss -tlnp | grep :20 (Linux) netstat -an | findstr :20 (Windows)