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

Responder


The response feature in Citrix NetScaler is very useful for responding to HTTP requests. When a user connects from an untrusted location, we like to block access. For example, we send another language to display based on the location or redirect to a secure connection based on HTTPs.

The responder feature can handle responses based on who sends the request, where it is sent from, and other criteria.

Configuring a responder policy

To create a responder policy, we need to start by creating the responder action.

Go to AppExpert | Responder | Actions and click on Add. Fill in the correct information based on the following explanation:

  • Name: This will be the name where the responder actions will be named to

  • Type: Select the responder type that you would like to perform:

    • NOOP: This type aborts the action but doesn't alter the packet flow. So, if there are multiple responder policies configured, Citrix NetScaler will to go the next policy and unmark the current one.

    • Respond with: This sends...