What Is Secure File Transfer Protocol (SFTP)?

What is Secure File Transfer Protocol (SFTP)?

What is Secure File Transfer Protocol (SFTP)? | DEFINITIONS

What is Secure File Transfer Protocol (SFTP)?

Have you ever wondered about the best way to securely transfer files over the internet? Look no further than Secure File Transfer Protocol, or SFTP. In this blog post, we will dive into the world of SFTP to understand what it is, how it works, and why it is essential for secure file transfers.

Key Takeaways:

  • SFTP is a secure method for transferring files over the internet.
  • It combines the benefits of FTP and SSH protocols to ensure data confidentiality and integrity.

Understanding SFTP

SFTP, short for Secure File Transfer Protocol, is a popular method for securely transferring files over the internet. It combines the benefits of two well-known protocols, FTP and SSH, to ensure data confidentiality and integrity during the transfer process.

SFTP works by establishing a secure connection between the client and the server, allowing files to be transferred safely over an encrypted channel. This encryption ensures that the data remains confidential and cannot be intercepted by unauthorized parties.

Unlike regular FTP, which transmits data in plain text, SFTP encrypts all data, including usernames, passwords, and file contents. This added layer of security safeguards your sensitive information and reduces the risk of data breaches or unauthorized access.

How Does SFTP Work?

When you initiate an SFTP transfer, the client establishes a secure connection with the server using SSH. Once the connection is established, the client can browse, upload, or download files securely.

During the transfer, the files are encrypted using cryptographic algorithms, making it nearly impossible for anyone to decipher the information without the correct encryption keys.

SFTP offers various authentication methods, including password-based authentication, public-key authentication, and multifactor authentication, promoting a higher level of security and user control.

Why is SFTP Essential?

SFTP is essential for several reasons:

  1. Security: By encrypting all data transferred between the client and the server, SFTP ensures that sensitive information remains confidential and protected from unauthorized access.
  2. Data Integrity: SFTP uses cryptographic algorithms to verify the integrity of files, ensuring that they have not been altered during the transfer process. This protects against data tampering or corruption.
  3. User Authentication: SFTP provides multiple authentication methods, allowing users to authenticate themselves securely before transferring or accessing files.
  4. Reliability: SFTP is designed to be reliable, with built-in error checking and automatic resuming of interrupted transfers. This minimizes the risk of data loss or file corruption.

Whether you are a business transferring sensitive customer data or an individual sharing personal files, using SFTP ensures that your files are transferred securely and with peace of mind.


SFTP, the Secure File Transfer Protocol, combines the benefits of FTP and SSH to provide a secure way of transferring files over the internet. By encrypting data, ensuring integrity, and offering reliable authentication methods, SFTP protects your sensitive information and provides peace of mind during the transfer process. Incorporate SFTP into your file transfer workflows to enhance security and safeguard your data.