To use Connection Server, you install the software on supported computers, configure the required components, and, optionally, optimize the components. Installing the Horizon Connection Server SoftwareDepending on the performance, availability, and security needs of your Horizon 7 deployment, you can install a single instance of Connection Server, replicated instances of Connection Server, and security servers. You must install at least one instance of Connection Server. Installation Prerequisites for Horizon Connection ServerBefore you install Connection Server, you must verify that your installation environment satisfies specific prerequisites. Install Horizon Connection Server with a New ConfigurationTo install Connection Server as a single server or as the first instance in a group of replicated Connection Server instances, you use the standard installation option. Install a Replicated Instance of Horizon Connection ServerTo provide high availability and load balancing, you can install one or more additional instances of Connection Server that replicate an existing Connection Server instance. After a replica installation, the existing and newly installed instances of Connection Server are identical. Configure a Security Server Pairing PasswordBefore you can install a security server, you must configure a security server pairing password. When you install a security server with the Connection Server installation program, the program prompts you for this password during the installation process. Install a Security ServerA security server is an instance of Connection Server that adds an additional layer of security between the Internet and your internal network. You can install one or more security servers to be connected to a Connection Server instance. Unified Access Gateway Appliance Advantages over VPNA Unified Access Gateway appliance is a default gateway for secure access to remote desktops and applications from outside the corporate firewall. Firewall Rules for Horizon Connection ServerCertain ports must be opened on the firewall for Connection Server instances and security servers. Reinstall Horizon Connection Server with a Backup ConfigurationIn certain situations, you might have to reinstall the current version of a Connection Server instance and restore the existing Horizon 7 configuration by importing a backup LDIF file that contains the View LDAP configuration data. Microsoft Windows Installer Command-Line OptionsTo install Horizon 7 components silently, you must use Microsoft Windows Installer (MSI) command-line options and properties. The Horizon 7 component installers are MSI programs and use standard MSI features. Uninstalling Horizon 7 Components Silently by Using MSI Command-Line OptionsYou can uninstall Horizon 7 components by using Microsoft Windows Installer (MSI) command-line options.