Once the instance is running, enter the public DNS provided by Amazon into your browser. You will then see the Magento application. You can go to '/admin' from your browser to access the application administration panel. The default application administrator is 'user'. Please check our documentation at https://bitnami.com/aws-credentials to learn how to get your password. You may change this username and password within the application settings. You can also SSH to the machine using the username 'bitnami' and your Amazon private key.