What is SFTP?
SFTP stands for Secure File Transfer Protocol. It is a network protocol that provides a secure way to transfer files over a secure shell (SSH) connection.
Key Features of SFTP:
Secure Data Transfer:
SFTP encrypts data during transfer, ensuring that sensitive information is protected from unauthorized access.Authentication:
It uses SSH for authentication, which can involve passwords, public keys, or a combination of both, enhancing security.File Management:
Besides file transfer, SFTP allows for file management operations such as:- Listing files and directories
- Deleting files
- Renaming files
Changing directories
Firewall Friendly:
SFTP operates over a single connection (typically on port 22), making it easier to use with firewalls.
Comparison with FTP:
Security:
Unlike traditional FTP (File Transfer Protocol), which transmits data in plain text, SFTP encrypts both commands and data, making it more secure.Connection Method:
SFTP relies on a secure SSH connection, while FTP can operate over unencrypted channels.
Use Cases for SFTP:
Secure File Sharing:
Businesses often use SFTP for sharing sensitive files securely with clients and partners.Backup Solutions:
SFTP is commonly used in backup solutions to transfer data securely to remote servers.Web Development:
Developers use SFTP to transfer files to and from web servers securely.
In summary, SFTP is a crucial tool for secure file transfer, providing a robust solution for individuals and organizations that need to exchange data securely.