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

Load balancing DNS


Load balancing DNS is not so much different from any regular service, and might also be needed to configure in case of setting up GSLB using NetScaler as a DNS Proxy.

There are, however, some settings that we need to be aware of. First, when we are setting up our services and need to bind a monitor to our backend DNS servers, we should create a custom monitor for DNS and enter a custom query to check if the DNS servers respond with the correct address. A custom monitor for DNS may look like the one in the following screenshot, where NetScaler will query the backend DNS server for an address; the IP addresses that return should match the values as shown in this screenshot:

Second, when we set up the virtual load balancing server, we have some different options available for DNS under the basic settings of the vServer, which are as follows:

  • DNS64: DNS64 needs to be enabled if you are having IPv6 clients that need to communicate with backend servers running IPv4. Also, this...