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

Chapter 6. Application Firewall

While network-based attacks rely on vulnerabilities in transport layer protocols such as TCP or even lower level protocols, Web application attacks target vulnerabilities that are specific to the application, such as the input it accepts. Because this application-level visibility is missing in Standard Network Firewalls, they cannot offer sufficient fine-grained protection. This is where web Application Firewalls come in.

Application Firewall or AppFirewall, which is how it is commonly referred to, is available either as a standalone product, as an option with NetScaler Enterprise Edition or is included when purchasing NetScaler Platinum Edition. We will use the term AppFirewall everywhere in the chapter for easier reading.

Note

Payment Card Industry Data Security Standard (PCI-DSS) is a security standard that is aimed to certify whether your e-commerce infrastructure is secure enough for your customers to use for transactions. Web Application Firewalls are...