Port 21
TCP File Sharing Medium Usage
File Transfer Protocol standard port for establishing control connections between clients and FTP servers
Software Using This Port (2 software)
Usage Suggestions
- Before using port 21, please confirm it is not occupied by other services
- If you encounter port conflicts, consider using other ports or stopping the occupying service
Quick Info
- Port
- 21
- Protocol
- TCP
- Categories
- File Sharing
- Usage Status
- 2 software in use
Related Ports
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