How to Use SFTP to Transfer Data Securely

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How to Use SFTP to Transfer Data Securely
FTP is the standard method for transferring files or other data between computers, but it is becoming increasingly obsolete in today's security-conscious environment. Fortunately, this is where SFTP (Secure File Transfer Protocol) comes in , which is especially useful for VPS hosting users .

In this guide, we will show you how to use SFTP for secure file transfer, talk about other useful commands, and explain more about how it works.

Let's get started.

Table of Contents view
What is SFTP?
SFTP, or SSH File Transfer Protocol for short, is a much cameroon phone number data secure way to transfer files. Using the SSH protocol , it supports encryption and other security methods used to better protect file transfers. It is the only secure file transfer protocol that protects against attacks at any point in the data transfer process, making it the best protocol.

During file transfer, all data is split into packets and sent over a single secure connection.

Sensitive information is encrypted and made unreadable during transfer between client and server. In other words, the original content (plaintext) will be replaced by an incoherent string of characters (ciphertext).

Only the recipient with the required decryption key will be able to see the original content. This prevents any unauthorized access during file transfer.

The normal file transfer protocol ( FTP ) has two different channels for exchanging data: the command channel and the data channel. In contrast, SFTP has only one encrypted channel where data is exchanged in encrypted and formatted packets.

How to connect using SFTP?
SFTP is a subsystem of SSH . Therefore, it supports all SSH authentication methods. Although it is easier to set up and use password authentication, it is much more convenient and secure to create SSH keys for passwordless SFTP access.

When you are ready, follow these steps to connect with SFTP:

Check your SSH access using one of these commands:

ssh user@server_ipaddress
ssh user@remotehost_domainname
Once this is done, leave the session if no errors occurred.

Start an SFTP connection with the following commands:

sftp user@server_ipaddress
sftp user@remotehost_domainname
If you are using a custom SSH port, use one of these commands to change the SFTP port:

sftp -oPort=customport user@server_ipaddress
sftp -oPort=customport user@remotehost_domainname
Here's what it should look like:

sftp -oPort=49166 user@31.220.57.32
Once connected, you will see an SFTP prompt.

How to transfer files using Secure File Transfer Protocol?
In this section we will show you how to transfer remote files to your local system using SFTP and vice versa.