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Ports required for FTP

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There is an FTPS server behind a firewall. What ports should you open for inbound and outbound traffic?


Answer 1, authority 100%

The protocol itself requires 20 / TCP and 21 / TCP (see list of standard ports ).

And if your server will work in passive mode, then you need to open a couple of any ports and specify them in ftp config under passive mode.

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