This article provides you with steps to setup SFTP on Filezilla.
What is SFTP?
SSH File Transfer Protocol (SFTP) is a secure file transfer protocol for file access, transfer, and management. It adapts the Secure Shell (SSH) protocol with encryption and secure authentication on both server and client.
Step 1 - Open FileZilla client

Step 2 -

SSL Certificate Installation for FileZilla
- Once you enroll for SSL certificate, SSL provider sends you a .pem file in the email that contains the intermediate and primary certificate.
 - Open FileZilla server Options in FileZilla Server and browse and click on Edit > Settings.

 - You will have a FileZilla server Options window, on the left side select SSL/TLS settings.

 - On the right side, select Enable FTP over SSL/TLS support.
 - In Private Key file, browse the location of the key file (created at the time of CSR).
 - In Certificate file box, enter .pem certificate file.
 - Enter Key Password in Key Password box. (Note – not applicable for the CSR generated using OpenSSL)
 - Click on the OK button and Restart the server.
 - Your SSL certificate is now installed.