| Description |
1 online resource |
|
text file |
| Series |
Professional expertise distilled |
|
Professional expertise distilled.
|
| Bibliography |
Includes bibliographical references and index. |
| Summary |
Gain essential knowledge and keep your NetScaler environment in top formAbout This BookLearn how the main features - Load Balancing, Content Switching, GSLB, SSL offloading, AAA, AppFirewall, and Gateway work under the hood using vividly explained flows and tracesExplore the NetScaler layout and the various logs, tools and methods available to help you when it's time to debugAn easy-to-follow guide, which will walk you through troubleshooting common issues in your NetScaler environmentWho This Book Is ForThis book is aimed at NetScaler administrators who have a basic understanding of the product but are looking for deeper exposure and guidance in identifying and fixing issues to keep their application environment performing optimally. What You Will LearnTroubleshoot traffic management features such as load balancing, SSL, GSLB and content switchingIdentify issues with caching and compressionDeal with authentication issues when using LDAP, RADIUS, certificates, Kerberos and SAMLDiagnose NetScaler high availability and networking issuesExplore how application firewall protections work and how to avoid false positivesLearn about NetScaler Gateway integration issues with XenApp, XenDesktop, and XenMobileDeal with NetScaler system-level issuesDiscover the NetScaler troubleshooting toolsIn DetailNetScaler 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. Style and approachThis helpful guide to troubleshooting NetScaler is delivered in a comprehensive and easy-to-follow manner. The topics in the book adopt a step-by-step approach. |
| Contents |
Cover; Copyright; Credits; Notice; About the Author; About the Reviewers; www.PacktPub.com; Table of Contents; Preface; Chapter 1: NetScaler Concepts at a Glance; The NetScaler filesystem; Folders on /flash; Folders on /var; A brief look at NetScaler address types; NetScaler IP; Virtual IP; Mapped IP; Subnet IP; GSLB Site IP; Request Switching and Connection Multiplexing; User interface options; GUI; CLI; Console; Shell; Nitro; SFTP; NetScaler modes; Endpoint and Nonend point mode; ANY, L4, or L7 modes; The mode switches on the NetScaler; Modes that are enabled by default; Fast Ramp. |
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Edge ConfigurationUsing Subnet IP; The Layer 3 mode; Path MTU Discovery; Modes that are disabled by default; Summary; Chapter 2: Traffic Management Features; Load balancing; Considerations; Startup RR factor; To USIP or not to USIP; Choosing a VIP type; Special considerations for load balancing Firewalls or CloudBridge appliances; Prefer Direct Route; vServer specific MAC -- when daisy chaining FW VIPs or CloudBridge appliances; Services or ServiceGroups; Common LB issues; Troubleshooting -- unable to access a newly created VIP; Troubleshooting application failures where VIP is UP. |
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Troubleshooting VIP performance issuesTroubleshooting VIP distribution issues; Troubleshooting intermittent issues; SSL; SSL deployment considerations; Certificates; Using Wireshark to examine the handshake; SSL handshake; A session-reused handshake; Session reuse and troubleshooting; Decrypting a trace using Wireshark; What if I needed to share this key with the Citrix tech support for troubleshooting?; Troubleshooting SSL issues; Wireshark troubleshooting for SSL failures; SSL card failures; SSL security concerns; Engaging with Citrix; Content switching. |
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Troubleshooting service unavailable errorsContent switching timeout errors; Global Server Load Balancing; GSLB flow; Metric Exchange Protocol; MEP versus monitors; RPC considerations; Troubleshooting GSLB; DNS caching and GSLB ; MEP down issues; RPC related issues; Troubleshooting proximity-based methods; Summary; Chapter 3: Integrated Caching and Compression; Integrated Caching; Understanding HTTP headers as they relate to caching; Evaluating cache policies; A sample cache response; What kind of content should I cache and not cache?; NetScaler's default caching behavior. |
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Handling dynamic contentCompression; The NetScaler's default compression behavior; Impact of using Compression; Verifying and monitoring Compression; Understanding the packet flow; Troubleshooting considerations; Summary; Chapter 4: AAA for Traffic Management; Lightweight Directory Access Protocol; Authentication flow; Troubleshooting LDAP; RADIUS protocol; Authentication flow; Troubleshooting RADIUS authentication; Client Certificate Based Authentication protocol; Client versus Server Certificates; Authentication Flow when using Client Certificates; NTLM SSO (401 Based Authentication). |
| Subject |
Virtual computer systems.
|
|
Web applications.
|
|
Systèmes virtuels (Informatique) |
|
Applications Web. |
|
Virtual computer systems |
|
Web applications |
| ISBN |
9781785280757 (electronic bk.) |
|
1785280759 |
|
1782175350 |
|
9781782175353 |
|
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