You are planning the deployment of a custom ASP.NET application that will run on Internet Information Server (IIS). The application will be hosted on four Azure virtual machines. The virtual machines will belong to the same virtual network and subnet and have a private IP address. The application will use a Microsoft SQL Server database to store content. You need to configure load balancing for the application. The solution must ensure that the application is safe from any attacks, such as SQL injection or cross-site scripting (XSS) attacks. What should you configure?