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 (15 chapters)
Implementing NetScaler VPX™ Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

HTTP/2 and SPDY


So far, we have discussed the lower layers of the ISO model with SSL, TCP, and Ethernet capabilities. The last piece of this puzzle is the application layer. This is where HTTP/2 and SPDY come in.

Now, HTTP 1.1 is the de facto standard of the Web, it has been around for 11 years and is not optimized for today's Internet.

Over the years, Google has done a lot of work trying to improve this web protocol. The company got as far as creating its own protocol, which was called SPDY. This protocol uses prioritizing and connection multiplexing, which allows the communication flow to go a lot faster. It also has the transmission headers sent using GZIP or deflate, and since the headers are sent in a binary format instead of a readable text like HTTP 1.1 does, it allows for a far better compression ratio.

You can read more about the SPDY protocol at https://www.chromium.org/spdy/spdy-protocol/spdy-protocol-draft3.

On the other hand, we have the HTTP/2 protocol, which has been developed...