Why the FTP server needs port 20 to be opened while connecting via FTP Active Mode?

Stefan Yakubov

Updated July 23, 2022 08:36

Plesk for Windows Plesk for Linux kb: how-to ABT: Group B

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Why the FTP server needs port 20/tcp to be opened while connecting via FTP Active Mode?

The incoming traffic to port 20/tcp(ftp-data) has to be allowed in order to establish the FTP data transfer while connecting via FTP Active Mode.

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