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The Citrix NetScaler family of application delivery solutions offers a rich set of features for the delivery of web applications with the highest levels of availability, security and performance:

Citrix NetScaler Features

• Intelligent Load Balancing and Content Switching ‑ Citrix NetScaler provides the industry's most comprehensive Layer 4‑7 traffic management. Deployed in front of application servers, NetScaler delivers fine-grained direction of client requests to ensure optimal distribution of traffic. In addition to Layer 4 information (protocol and port number), traffic management policies for TCP applications can be based upon any application‑layer content. Administrators can granularly segment application traffic based upon information contained within an HTTP or TCP request's body, as well as L4‑7 header information such as URL, application data type or cookie. Numerous load‑balancing algorithms and extensive server health checks provide greater application availability by ensuring client requests are directed only to correctly behaving servers.
• Accelerated Application Performance ‑ Citrix NetScaler delivers multiple TCP optimizations to improve the performance of the network and server infrastructure. For example, TCP connection multiplexing reduces thousands of short‑lived client connections into a much smaller number of long‑lived, persistent server connections. This and other TCP optimizations reduce server load, improving server performance and accelerating application response. NetScaler TCP optimizations are transparent to clients and servers, accelerating the delivery of any enterprise or Web‑based application while requiring little or no configuration.
• Citrix AppCompress ‑ Citrix AppCompress improves end‑user performance and reduces bandwidth consumption by compressing HTML/Text content before transmission to clients. AppCompress supports both encrypted and unencrypted data. More information on Citrix AppCompress.
• SSL Acceleration ‑ NetScaler integrates hardware‑based SSL acceleration to offload the compute-intensive processes of SSL connection setup and bulk encryption from Web servers. SSL acceleration reduces CPU utilization on servers, freeing server resources for other tasks. SSL acceleration is automatically enhanced by TCP optimizations and is fully integrated with the AppCompress option.
• Citrix AppCache ‑ Citrix AppCache™ stores frequently requested Web content in memory and instantly serves static and dynamically‑generated data to application users, speeding response time. AppCache reduces the number of server resources needed for page regenerations, allowing existing servers to support increased loads. More information on Citrix AppCache.
• NetScaler Application Firewall Module ‑ Citrix Application Firewall protects web applications from the growing number of application‑layer attacks, including buffer overflow exploits, SQL injection attempts, cross‑site scripting attacks and more. In addition to proven attack defenses, the NetScaler Application Firewall module provides identity theft protection by securing confidential corporate information and sensitive customer data. More information on NetScaler Application Firewall module.
• EdgeSight for NetScaler ‑ Citrix EdgeSight for NetScaler provides page level visibility of web application performance. EdgeSight for NetScaler transparently instruments client HTML pages, proactively monitoring web page response time from the end‑user perspective. Response time measurements are combined with detailed statistics on the trip durations of requests and responses across the site infrastructure, providing granular visibility into how web applications are behaving from the end‑user's perspective. More information on EdgeSight for NetScaler.
• Access Gateway Universal SSL VPN Licenses ‑ NetScaler integrates the complete SSL VPN functionality of Citrix Access Gateway, Enterprise Edition and Citrix SmartAccess. This SSL VPN functionality is enabled by purchasing the Access Gateway Universal client licenses. Licensing for up to 10,000 concurrent users is available. More information on Citrix Access Gateway.
• Global Server Load Balancing ‑ Global Server Load Balancing delivers global traffic management for multi‑site enterprises and service providers as a comprehensive solution for global load balancing and disaster recovery. More information on Citrix Global Server Load Balancing.
• Powerful Policy Engine and Intuitive Management Capabilities ‑ AppExpert Visual Policy Builder enables application delivery policies to be created without the need for coding complex programs or scripts. In addition, NetScaler reduces ongoing operational expenses by consolidating multiple capabilities in a single solution managed with either a Web-based graphical user interface (GUI) or a powerful command‑line interface (CLI). For multiple NetScaler appliances, the separately available NetScaler Command Center provides centralized administration of system configuration, event management, performance management and SSL certificate administration.

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