Book Image

Mastering NetScaler VPX

By : Marius Sandbu, Andy Paul
Book Image

Mastering NetScaler VPX

By: Marius Sandbu, Andy Paul

Overview of this book

Citrix NetScaler is one of the best Application Delivery Controller products in the world. The Application Delivery Controllers are commonly used for load balancing purposes, to optimize traffic, and to perform extra security settings. This book will give you an insight into all the available features that the Citrix NetScaler appliance has to offer. The book will start with the commonly used NetScaler VPX features, such as load balancing and NetScaler Gateway functionality. Next, we cover features such as Responder, Rewrite, and the AppExpert templates, and how to configure these features. After that, you will learn more about the other available Citrix technologies that can interact with Citrix NetScaler. We also cover troubleshooting, optimizing traffic, caching, performing protection using Application Firewall, and denying HTTP DDoS attacks for web services. Finally, we will demonstrate the different configuration principles real-world Citrix NetScaler deployment scenarios.
Table of Contents (15 chapters)
Mastering NetScaler VPX™
Notice
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Analyzing network traffic using Citrix NetScaler® Insight


Now, in most cases, NetScaler is used as a central component to deliver high availability services to users, both internally and externally. This means that NetScaler, in most cases, handles a large amount of traffic, which might make it difficult to analyze directly using a trace file.

What happens if a user complains about the slow performance of an application, or that something is running sluggishly? Or if we want to get an overview of the number of users accessing our services? This is where AppFlow comes in. A quick introduction to deployment is supplied in Chapter 3, Integration with Citrix ® Components.

AppFlow is a feature in NetScaler that is used to collect web performance data and also database information. It can also be used to gather performance from ICA sessions. It is built upon the IPFIX format, which is an open standard defined in RFC 5101.

As an example, see the following screenshot. When a client opens a connection...