Ftp Transfer Mode. Active mode ftp a user connects from a random port on a file transfer client to ftp port 21 on the server. There are 2 different modes for ftp both works differently.

The default transfer mode is binary. Connect to an ftp server. Choose transfer mode.
You can enable passive ftp transfer mode in.
Binaryftpobj sets the ftp transfer mode for the server associated with ftpobj to binary which is the default for ftp objectsif you previously called the ascii function then call binary before transferring a nontext file such as an executable file or zip archive. In general files whose contents can be read using a simple text editor like notepad nano or pico are considered text files. There is a misconception that ftp data connection uses tcp port 20 always which is not true. Open your filezilla ftp program.