- Action Analytics
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AppExpert Applications and Templates
- How AppExpert application works
- Get started with AppExpert
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Customize AppExpert Configuration
- Configure public endpoints
- Configure services and service groups for an application unit
- Create application units
- Configure application unit rules
- Configure policies for application units
- Configure application units
- Configure public endpoints for an application
- Specify the order of evaluation of application units
- Configure persistency groups for application units
- View AppExpert applications and configure entities by using application visualizer
- Configure user authentication
- Monitor Citrix ADC statistics
- Delete an AppExpert application
- Configure application authentication, authorization, and auditing
- Set up a custom Citrix ADC application
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Creating and Managing Template Files
- Exporting an AppExpert Application to a Template File
- Exporting a Content Switching Virtual Server Configuration to a Template File
- Creating Variables in Application Templates
- Uploading and Downloading Template Files
- Understanding Citrix ADC Application Templates and Deployment Files
- Deleting a Template File
- Citrix Gateway Applications
- AppQoE
- Entity Templates
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HTTP Callouts
- How an HTTP Callout Works
- Notes on the Format of HTTP Requests and Responses
- Configuring an HTTP Callout
- Verifying the Configuration
- Invoking an HTTP Callout
- Avoiding HTTP Callout Recursion
- Caching HTTP Callout Responses
- Use Case: Filtering Clients by Using an IP Blacklist
- Use Case: ESI Support for Fetching and Updating Content Dynamically
- Use Case: Access Control and Authentication
- Use Case: OWA-Based Spam Filtering
- Use Case: Dynamic Content Switching
- Pattern Sets and Data Sets
- Variables
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Policies and Expressions
- Introduction to Policies and Expressions
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Configuring Advanced Policy Infrastructure
- Rules for Names in Identifiers Used in Policies
- Creating or Modifying a Policy
- Policy Configuration Examples
- Binding Policies Using Advanced Policy
- Unbinding a Policy
- Creating Policy Labels
- Configuring a Policy Label or Virtual Server Policy Bank
- Invoking or Removing a Policy Label or Virtual Server Policy Bank
- Configuring and Binding Policies with the Policy Manager
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Configuring Advanced Policy Expression: Getting Started
- Basic Elements of an Advanced Policy Expression
- Compound Advanced Policy Expressions
- Specifying the Character Set in Expressions
- Classic Expressions in Advanced Policy Expressions
- Configuring Advanced Policy Expressions in a Policy
- Configuring Named Advanced Policy Expressions
- Configuring Advanced Policy Expressions Outside the Context of a Policy
- Advanced Policy Expressions: Evaluating Text
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Advanced Policy Expressions: Working with Dates, Times, and Numbers
- Format of Dates and Times in an Expression
- Expressions for the Citrix ADC System Time
- Expressions for SSL Certificate Dates
- Expressions for HTTP Request and Response Dates
- Generating the Day of the Week, as a String, in Short and Long Formats
- Expression Prefixes for Numeric Data Other Than Date and Time
- Converting Numbers to Text
- Virtual Server Based Expressions
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Advanced Policy Expressions: Parsing HTTP, TCP, and UDP Data
- About Evaluating HTTP and TCP Payload
- Expressions for Identifying the Protocol in an Incoming IP Packet
- Expressions for HTTP and Cache-Control Headers
- Expressions for Extracting Segments of URLs
- Expressions for HTTP Status Codes and Numeric HTTP Payload Data Other Than Dates
- SIP Expressions
- Operations for HTTP, HTML, and XML Encoding and “Safe” Characters
- Expressions for TCP, UDP, and VLAN Data
- Expressions for Evaluating a DNS Message and Identifying Its Carrier Protocol
- XPath and HTML, XML, or JSON Expressions
- Encrypting and Decrypting XML Payloads
- Advanced Policy Expressions: Parsing SSL Certificates
- Advanced Policy Expressions: IP and MAC Addresses, Throughput, VLAN IDs
- Advanced Policy Expressions: Stream Analytics Functions
- Advanced Policy Expressions: DataStream
- Typecasting Data
- Regular Expressions
- Configuring Classic Policies and Expressions
- Expressions Reference-Advanced Policy Expressions
- Expressions Reference-Classic Expressions
- Summary Examples of Default Syntax Expressions and Policies
- Tutorial Examples of Default Syntax Policies for Rewrite
- Tutorial Examples of Classic Policies
- Migration of Apache mod_rewrite Rules to the Default Syntax
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Rate Limiting
- Configuring a Stream Selector
- Configuring a Traffic Rate Limit Identifier
- Configuring and Binding a Traffic Rate Policy
- Viewing the Traffic Rate
- Testing a Rate-Based Policy
- Examples of Rate-Based Policies
- Sample Use Cases for Rate-Based Policies
- Rate Limiting for Traffic Domains
- Configure rate limit at packet level
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Responder
- Enabling the Responder Feature
- Configuring a Responder Action
- Configuring a Responder Policy
- Binding a Responder Policy
- Setting the Default Action for a Responder Policy
- Responder Action and Policy Examples
- Diameter Support for Responder
- RADIUS Support for Responder
- DNS Support for the Responder Feature
- Troubleshooting
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Rewrite
- How Rewrite Works
- Enabling the Rewrite Feature
- Configuring a Rewrite Action
- Configuring a Rewrite Policy
- Binding a Rewrite Policy
- Configuring Rewrite Policy Labels
- Configuring the Default Rewrite Action
- Bypassing the Safety Check
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Rewrite Action and Policy Examples
- Example 1: Delete Old X-Forwarded-For and Client-IP Headers
- Example 2: Adding a Local Client-IP Header
- Example 3: Tagging Secure and Insecure Connections
- Example 4: Mask the HTTP Server Type
- Example 5: Redirect an External URL to an Internal URL
- Example 6: Migrating Apache Rewrite Module Rules
- Example 7: Marketing Keyword Redirection
- Example 8: Redirect Queries to the Queried Server
- Example 9: Home Page Redirection
- Example 10: Policy-based RSA Encryption
- Example 11: policy-based RSA encryption with no padding
- URL Transformation
- RADIUS Support for the Rewrite Feature
- Diameter Support for Rewrite
- DNS Support for the Rewrite Feature
- String Maps
- URL Sets
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Rewrite Action and Policy Examples
The examples in this section demonstrate how to configure rewrite to perform various useful tasks. The examples occur in the server room of Example Manufacturing Inc., a mid-sized manufacturing company that uses its Web site to manage a considerable portion of its sales, deliveries, and customer support.
Example Manufacturing has two domains: example.com for its Web site and email to customers, and example.net for its intranet. Customers use the Example Web site to place orders, request quotes, research products, and contact customer service and technical support.
As an important part of Example’s revenue stream, the Web site must respond quickly and keep customer data confidential. Example therefore has several Web servers and uses Citrix ADC appliances to balance the Web site load and manage traffic to and from its Web servers.
The Example system administrators use the rewrite features to perform the following tasks:
Example 1: Delete old X-Forwarded-For and Client-IP Headers
Example Inc. removes old X-Forwarded-For and Client-IP HTTP headers from incoming requests.
Example 2: Adding a Local Client-IP Header
Example Inc. adds a new, local Client-IP header to incoming requests.
Example 3: Tagging Secure and Insecure Connections
Example Inc. tags incoming requests with a header that indicates whether the connection is a secure connection.
Example 4: Mask the HTTP Server Type
Example Inc. modifies the HTTP Server: header so that unauthorized users and malicious code cannot use that header to determine the HTTP server software it uses.
Example 5: Redirect an External URL to an Internal URL
Example Inc. hides information about the actual names of its Web servers and the configuration of its server room from users, to make URLs on its Web site shorter and easier to remember and to improve security on its site.
Example 6: Migrating Apache Rewrite Module Rules
Example Inc. moved its Apache rewrite rules to a Citrix ADC appliance, translating the Apache PERL-based script syntax to the Citrix ADC rewrite rule syntax.
Example 7: Marketing Keyword Redirection
The marketing department at Example Inc. sets up simplified URLs for certain predefined keyword searches on the company’s Web site.
Example 8: Redirect Queries to the Queried Server.
Example Inc. redirects certain query requests to the appropriate server.
Example 9: Home Page Redirection
Example Inc. recently acquired a smaller competitor, and it now redirects requests to the acquired company’s home page to a page on its own Web site.
Example 10: Policy-based RSA Encryption
Example Inc. encrypt HTTP predefined and user-defined header or body content by using PEM RSA public key.
Each of these tasks requires that the system administrators create rewrite actions and policies and bind them to a valid bind point on the Citrix ADC.