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What is the default port of F T P?
The default data port of FTP is 2 1.

The ftp port number is 2 1. The FTP port number can be changed to FTP port numbers 20 and 2 1. One is a data port and the other is a control port. The control port is generally 2 1, but the data port is not necessarily 20, which is related to the application mode of FTP. If it is active mode, it should be 20. If it is passive mode, it is decided by the server and the client through negotiation.