Book Image

Implementing NetScaler VPX??? - Second Edition

By : Marius Sandbu
Book Image

Implementing NetScaler VPX??? - Second Edition

By: Marius Sandbu

Overview of this book

With a large demand for responsive websites and availability of services, IT administrators are faced with an ever-rising need for services that are optimized for speed. NetScaler VPX is a software-based virtual appliance that provides users with the comprehensive NetScaler feature set. Implementing apps and cloud-based services is much easier with its increased service performance and integrated security features. This book will give you an insight into all the new features that NetScaler VPX™ has to offer. Starting off with the basics, you will learn how to set NetScaler up and configure it in a virtual environment including the new features available in version 11, such as unified gateway and portal theme customization. Next, the book will cover how to deploy NetScalar on Azure and Amazon, and you will also discover how to integrate it with an existing Citrix infrastructure. Next, you will venture into other topics such as load balancing Microsoft and Citrix solutions, configuring different forms of high availability Global Server Load Balancing (GSLB), and network optimization. You will also learn how to troubleshoot and analyze data using NetScaler's extensive array of features. Finally, you will discover how to protect web services using an application firewall and will get to grips with other features such as HTTP, DOS, and AAA.
Table of Contents (10 chapters)
9
Index

Compression

The compression feature enables a NetScaler vServer to compress HTTP data that is going to or from the client. Another benefit of this feature is that the HTTP compression algorithm encrypts the data going from the client to the server and therefore adds another layer of security.

Note

Using compression does not encrypt the data as efficiently as using a digitally signed certificate, so do not contemplate replacing certificates with compression.

The compression feature requires that the client who is requesting the content have a browser that supports compression. The newest and most common browsers, such as Firefox 4 and above, Google Chrome 20 and above, and Internet Explorer 7 and above, support HTTP compression. So, when a client connects to a vServer, it will announce what capabilities it has to the server. This allows NetScaler to choose the best type of algorithm.

Note

HTTP compression is based on the GZIP and DEFLATE algorithms. These are defined in RFC 1950/1951/1952 formats...