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5 Μαρ 2024 · FTPS typically uses port 990 for control connections and port 989 for data connections under implicit security. However, FTPS can also use port 21 when operating under explicit security. Learn more about the difference between FTPS vs HTTPS for secure file transfers.
For the explicit option you only need ONE port: 22. For the implicit option you only need to have the firewall open for the control port: 8086 (which forwards internally to port 21 on your filezilla server).
FTP needs two ports (one for sending and one for receiving) because it was originally designed to operate on top of Network Control Protocol (NCP), which was a simplex protocol that utilized two port addresses, establishing two connections, for two-way communications.
FTPS (also known as FTP-SSL and FTP Secure) is an extension to the commonly used File Transfer Protocol (FTP) that adds support for the Transport Layer Security (TLS) and, formerly, the Secure Sockets Layer (SSL, which is now prohibited by RFC7568) cryptographic protocols.
8 Δεκ 2021 · FTPS port: What port numbers are used in file transfer? All there is to know about FTPS and the ports it utilizes; what they are, how they are used, what are the risks involved plus an alternative protocol.
9 Αυγ 2023 · FTPS utilizes a combination of asymmetric and symmetric encryption algorithms to secure the data and establish a secure connection between the client and the server. The client and server perform a handshake to negotiate encryption settings and authenticate each other’s identity.
20 Οκτ 2011 · When it comes to ease of implementing SFTP or FTPS, SFTP is considered the easiest secure FTP protocol to implement. SFTP is very firewall friendly, needing a single port number (default of 22) to to be opened through the firewall.
