Citrix NetScaler 10.1
NetScaler ADC is an application delivery controller that performs application-specific traffic analysis to intelligently distribute, optimize, and secure Layer 4-Layer 7 (L4–L7) network traffic for web applications. For example, a NetScaler bases load balancing decisions on individual HTTP requests instead of on long-lived TCP connections, so that the failure or slowdown of a server is managed much more quickly and with less disruption to clients. Its feature set can be broadly consisting of switching features, security and protection features, and server-farm optimization features.
To view the latest release notes document (build 135.21), click this link.
For information about the Current Release of NetScaler, see NetScaler 12.1. That documentation includes instructions for upgrading from earlier versions.