FTP/S uses which of the following TCP ports by default?

The correct answer is D. 989 and 990. FTP/S (FTP Secure) adds SSL/TLS encryption to standard FTP. It uses port 990 for the control connection and port 989 for the data transfer connection. These are distinct from plain FTP, which uses port 21 (control) and port 20 (data). Port 443 is for HTTPS, port 22 is for…

General security concepts

Question

Options

A20 and 21
B139 and 445
C443 and 22
D989 and 990

How the community answered

(64 responses)

A
2% (1)
B
2% (1)
C
5% (3)
D
92% (59)

Explanation

FTP/S (FTP Secure) adds SSL/TLS encryption to standard FTP. It uses port 990 for the control connection and port 989 for the data transfer connection. These are distinct from plain FTP, which uses port 21 (control) and port 20 (data). Port 443 is for HTTPS, port 22 is for SSH/SFTP, and ports 139/445 are for SMB/NetBIOS - none of which are FTP/S.

Topics

#FTP/S#port numbers#secure file transfer#TCP ports

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