How can you change the port number of FTP?

To change the port number of FTP, you need to adjust the configuration settings in the FTP server software. This typically involves editing the server's configuration file (like vsftpd.conf for vsftpd or proftpd.conf for ProFTPD) to specify the desired port number, usually under a directive like Port. After making the change, restart the FTP server for the new settings to take effect. Additionally, ensure that any firewalls or network settings allow traffic on the new port.