How to connect to your Amazon Instance FTP using fileZilla and others

You can download the FileZilla Client application from: http://filezilla-project.org/
You should follow these steps to upload files:

1. Get your SSH Key in PPK format
2. Start FileZilla
3. Go to edit -> preferences
4. Select SFTP 
5. Click "Add keyfile" 
6. Select the PPK file [If you don't have ppk file then import pem file, it will convert to ppk file]
7. Save the settings (click OK in settings window) 
8. In the connection toolbar, enter:
   1. Host: the Public DNS. You should set your server domain name
      (i.e.  xyz.bitnamiapp.com / ec2-xwz.compute-1.amazonaws.com)
      [eg. ec2-54-xx-xx-103.sp-southeast-1.compute.amazonaws.com]
   2. User: 'bitnami' / 'ec2-user'
   3. Password: leave it blank 
   4. Port: 22
9. Click "Quickconnect" 
10. If you get a message "The server's host key is unknown", click "ok" button 

If you find problems accessing your machine, you can get extra information by enabling the debug option in your FileZilla settings.

for more detail log on to https://wiki.bitnami.com/cloud/how_to_connect_to_your_amazon_instance#Upload_your_files_with_SFTP