TCP
FTP Data
What port 20 is used for
FTP data channel in active mode.
Security considerations
FTP sends credentials in cleartext — use SFTP/FTPS instead.
Check if port 20 is open on any host:
Open Port Scanner →FTP data channel in active mode.
FTP sends credentials in cleartext — use SFTP/FTPS instead.
Check if port 20 is open on any host:
Open Port Scanner →