Which of the following statements is true about the port number used by SFTP (Secure File Transfer Protocol)?

Correct option is B

1. Understanding SFTP:
· SFTP stands for Secure File Transfer Protocol.
· It is used to securely transfer files over a network using the SSH (Secure Shell) protocol.
· SFTP ensures encrypted communication, unlike FTP, which transfers data in plaintext.
2. Port Number for SFTP:
· SFTP operates on port 22, the same port used by SSH.
· This is because SFTP is a subsystem of SSH, leveraging SSH for authentication and encryption.
Important Key Points:
1. Difference Between FTP and SFTP:
· FTP uses port 21 and transfers files without encryption.
· SFTP uses port 22 and ensures secure file transfer with encryption.
2. Port Numbers to Remember:
· Port 21: FTP
· Port 22: SSH and SFTP
· Port 23: Telnet
· Port 25: SMTP
Knowledge Booster:
1. Other Secure File Transfer Methods:
· FTPS (FTP Secure): Adds encryption to FTP using SSL/TLS and uses ports 989/990.
· SCP (Secure Copy Protocol): Another SSH-based file transfer protocol.
2. SFTP Benefits:
· End-to-end encryption for secure file transfers.
· Authentication using SSH keys or passwords.
· Widely used for secure communication in enterprise environments.