Unified Access Gateway functions as a secure gateway for users who want to access remote desktops and applications from outside the corporate firewall. Note: VMware Unified Access Gateway® was formerly named VMware Access Point. Unified Access Gateway as a Secure GatewayUnified Access Gateway is an appliance that is normally installed in a demilitarized zone (DMZ). Unified Access Gateway is used to ensure that the only traffic entering the corporate data center is traffic on behalf of a strongly authenticated remote user. Using Unified Access Gateway Instead of a Virtual Private NetworkUnified Access Gateway and generic VPN solutions are similar as they both ensure that traffic is forwarded to an internal network only on behalf of strongly authenticated users. Unified Access Gateway System and Network RequirementsTo deploy the Unified Access Gateway appliance, ensure that your system meets the hardware and software requirements. Firewall Rules for DMZ-Based Unified Access Gateway AppliancesDMZ-based Unified Access Gateway appliances require certain firewall rules on the front-end and back-end firewalls. During installation, Unified Access Gateway services are set up to listen on certain network ports by default. Unified Access Gateway Load Balancing TopologiesA Unified Access Gateway appliance in the DMZ can be configured to point to a server or a load balancer that fronts a group of servers. Unified Access Gateway appliances work with standard third-party load balancing solutions that are configured for HTTPS. DMZ Design for Unified Access Gateway with Multiple Network Interface CardsOne of the configuration settings for Unified Access Gateway is the number of virtual Network Interface Cards (NICs) to use. When you deploy Unified Access Gateway, you select a deployment configuration for your network. Upgrade with Zero DowntimeZero downtime upgrades let you upgrade Unified Access Gateway with no downtime for the users. Before you upgrade a Unified Access Gateway appliance, the quiesce mode in the Unified Access Gateway system configuration pages is changed from NO to YES. Join or Leave the Customer Experience Improvement ProgramThe VMware Customer Experience Improvement Program (CEIP) provides information that VMware uses to improve its products and services, to fix problems, and to advise you on how best to deploy and use VMware products.