ip ftp passive — global
ip ftp passive no ip ftp passive
Passive FTP mode
Disabled (normal FTP)
This command configures the router to use passive FTP. Passive FTP is often used when connecting through firewalls or access lists that block normal FTP connections. With passive FTP, the file transfer session originates from the client, not the server, which makes firewalls more likely to allow it. You may need to use passive FTP when copying a file or image to an FTP server.