Book Image

Troubleshooting NetScaler

By : Raghu Varma Tirumalaraju
Book Image

Troubleshooting NetScaler

By: Raghu Varma Tirumalaraju

Overview of this book

NetScaler is a high performance Application Delivery Controller (ADC). Making the most of it requires knowledge that straddles the application and networking worlds. As an ADC owner you will also likely be the first person to be solicited when your business applications fail. You will need to be quick in identifying if the problem is with the application, the server, the network, or NetScaler itself. This book provides you with the vital troubleshooting knowledge needed to act fast when issues happen. It gives you a thorough understanding of the NetScaler layout, how it integrates with the network, and what issues to expect when working with the traffic management, authentication, NetScaler Gateway and application firewall features. We will also look at what information to seek out in the logs, how to use tracing, and explore utilities that exist on NetScaler to help you find the root cause of your issues.
Table of Contents (17 chapters)
Troubleshooting NetScaler
Credits
Notice
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Basic and Smart Access Modes


Before we look at the individual features, it's important to understand the different modes that the Gateway VPN Vserver can be set to. Depending on the vServer mode chosen, which in turn permits specific functionalities, you might require additional licenses called Concurrent User (CCU) licenses for its functioning. Here's a quick summary of what Basic and Smart Access Modes provide.

Basic mode

The following are the characteristics of Basic Mode:

  • Does not consume or need any CCUs

  • Provides secure (encrypted) access to published applications or desktops (ICA Proxy)

  • No VPNs or Endpoint Analysis (EPA) capabilities are provided

  • This mode is very similar in functionality to the legacy Secure Gateway product

Smart Access mode

This consumes one CCU per session. Here are the additional things you can do with a Smart Access vServer:

  • SSL VPN tunnels

  • Split tunneling

  • EPA and quarantining

  • Policy-based access to published apps and desktops (Smart Access)

  • MicroVPNs for XenMobile

  • RDP Proxy...