F5 Networks Developing iRules for BIG-IP v14 - December 14-16, 2020

$2,995.00

December 14-16, 2020

Duration: 3 days

7:00AM-4:00PM PT

Live Virtual Class


About this Course

This course provides networking professionals a functional understanding of iRules development. The course builds on the foundation of the Administering BIG-IP or Configuring LTM course, demonstrating how to logically plan and write iRules to help monitor and manage common tasks involved with processing traffic on the BIG-IP system. Extensive course labs consist of writing, applying and evaluating the effect of iRules on local traffic. This hands-on course includes lectures, labs, and discussions.


Audience Profile

This course is intended for system administrators, network administrators and application developers responsible for the customization of traffic flow through a BIG-IP system.


Outline

Lesson 1 : Setting Up the BIG-IP System

  • Introducing the BIG-IP System
  • Initially Setting Up the BIG-IP System
  • Archiving the BIG-IP System Configuration
  • Leveraging F5 Support Resources and Tools

Lesson 2 : Getting Started with iRules

  • Customizing Application Delivery with iRules
  • Triggering an iRule
  • Leveraging the DevCentral Ecosystem
  • Creating and Deploying iRules

Lesson 3 : Exploring iRule Elements

  • Introducing iRule Constructs
  • Understanding iRule Events and Event Context
  • Working with iRule Commands
  • Logging from an iRule Using SYSLOG-NG (LOG Command)
  • Working with User-Defined Variables
  • Working with Operators and Data Types
  • Working with Conditional Control Structures (IF and SWITCH)
  • Incorporating Best Practices in iRules

Lesson 4 : Developing and Troubleshooting iRules

  • Mastering Whitespace and Special Symbols
  • Grouping Strings
  • Developing and Troubleshooting Tips
  • Using Fiddler to Test and Troubleshoot iRules

Lesson 5 : Optimizing iRule Execution

  • Understanding the Need for Efficiency
  • Measure iRule Runtime Efficiency Using Timing Statistics
  • Modularizing iRules for Administrative Efficiency
  • Using Procedures to Modularize Code
  • Optimizing Logging
  • Using High-Speed Logging Commands in an iRule
  • Implementing Other Efficiencies
  • Using Looping Control Structures (WHILE, FOR, FOREACH Commands)

Lesson 6 : Securing Web Applications with iRules

  • Integrating iRules into Web Application Defense
  • Mitigating HTTP Version Attacks
  • Mitigating Path Traversal Attacks
  • Using iRules to Defends Against Cross-Site Request Forgery (CSRF)
  • Mitigating HTTP Method Vulnerabilities
  • Securing HTTP Cookies with iRules
  • Adding HTTP Security Headers
  • Removing Undesirable HTTP Headers

Lesson 7 : Working with Numbers and Strings

  • Understanding Number Forms and Notation
  • Working with Strings (STRING and SCAN Commands)
  • Combining Strings (Adjacent Variables, CONCAT and APPEND Commands)
  • Using iRule String Parsing Functions (FINDSTR, GETFIELD, and SUBSTR Commands)

Lesson 8 : Processing the HTTP Payload

  • Reviewing HTTP Headers and Commands
  • Accessing and Manipulating HTTP Headers (HTTP::header Commands)
  • Other HTTP commands (HTTP::host, HTTP::status, HTTP::is_keepalive, HTTP::method, HTTP::version, HTTP::redirect, HTTP::respond, HTTP::uri)
  • Parsing the HTTP URI (URI::path, URI::basename, URI::query)
  • Parsing Cookies with HTTP::cookie
  • Selectively Compressing HTTP Data (COMPRESS Command)

Lesson 9 : Working with iFiles and Data Groups

  • Working with iFiles
  • Introducing Data Groups
  • Working with Old Format Data Groups (MATCHCLASS, FINDCLASS)
  • Working with New Format Data Groups (CLASS MATCH, CLASS SEARCH)

Lesson 10 : Using iRules with Universal Persistence, Stream, and Statistics Profiles

  • Implementing Universal Persistence (PERSIST UIE Command)
  • Working with the Stream Profile (STREAM Command)
  • Collecting Statistics Using a Statistics Profile (STATS Command)
  • Collecting Statistics Using iStats (ISTATS Command)

Lesson 11 : Incorporating Advanced Variables

  • Reviewing the Local Variable Namespace
  • Working with Arrays (ARRAY Command)
  • Using Static and Global Variables
  • Using the Session Table (TABLE Command)
  • Processing Session Table Subtables
  • Counting “Things” Using the Session Table


Prerequisites

Administering BIG-IP or Configuring BIG-IP LTM: Local Traffic Manager or hold the F5 Certified BIG-IP Administrator certification