## Prerequisites RAS Management Portal can run in any modern web browser supporting HTML5 such as Microsoft Edge (Chromium-based), Google Chrome, Mozilla Firefox, Safari, etc. Before installing the web service, make sure that your Windows server has the following updates installed (RAS Management Portal depends on them): Windows Server 2008 R2: — KB2999226 and KB2533623 Windows Server 2012 R2 — KB2999226 If you don't have the updates installed and run the installer, it will ask you to install them. Newer versions of Windows Server do not require any specific updates. The web service listens to web requests on the following ports by default: HTTPS: 20443 HTTP: 20080