Citrix NetScaler VPX is a virtual appliance that provides web and application load balancing, secure and remote access, acceleration, security and offload features1. To set up and configure a Citrix NetScaler VPX appliance, you need to download it from the Citrix website, install it on a hypervisor such as Citrix XenServer or Microsoft Azure23, and log on to the console using the nsroot credentials2.

To expose the Citrix NetScaler VPX private VIP to the internet in order for users to be able to access the Citrix VDI desktops upon a DR failover, one possible solution is to use a floating IP address. A floating IP address is an IP address that can be dynamically assigned to an instance by using API calls. It allows you to redirect network traffic from one instance to another without changing any DNS settings or client configuration.