Practical Cloud Native Security with Falco

Spis treści ebooka

• Preface
  • Who Is This Book For?
  • Overview
    • Part I: The Basics
    • Part II: The Architecture of Falco
    • Part III: Running Falco in Production
    • Part IV: Extending Falco
  • Conventions Used in This Book
  • Using Code Examples
  • OReilly Online Learning
  • How to Contact Us
  • Acknowledgments
    • Leonardo
    • Loris
• I. The Basics
• 1. Introducing Falco
  • Falco in a Nutshell
    • Sensors
    • Data Sources
    • Rules
    • Data Enrichment
    • Output Channels
    • Containers and More
  • Falcos Design Principles
    • Specialized for Runtime
    • Suitable for Production
    • Intent-Free Instrumentation
    • Optimized to Run at the Edge
    • Avoids Moving and Storing a Ton of Data
    • Scalable
    • Truthful
    • Robust Defaults, Richly Extensible
    • Simple
  • What You Can Do with Falco
  • What You Cannot Do with Falco
  • Background and History
    • Network Packets: BPF, libpcap, tcpdump, and Wireshark
    • Snort and Packet-Based Runtime Security
    • The Network Packets Crisis
    • System Calls as a Data Source: sysdig
    • Falco
      • Expanding into Kubernetes
      • Joining the Cloud Native Computing Foundation
      • Plugins and the cloud
      • A long journey
• 2. Getting Started with Falco on Your Local Machine
  • Running Falco on Your Local Machine
    • Downloading and Installing the Binary Package
    • Installing the Driver
    • Starting Falco
  • Generating Events
  • Interpreting Falcos Output
  • Customizing Your Falco Instance
    • Rules Files
    • Output Channels
  • Conclusion
• II. The Architecture of Falco
• 3. Understanding Falcos Architecture
  • Falco and the Falco Libraries: A Data-Flow View
  • Drivers
  • Plugins
  • libscap
    • Managing Data Sources
    • Supporting Trace Files
      • Step 1: Create the trace file
      • Step 2: Process the trace file with Falco
    • Collecting System State
  • libsinsp
    • State Engine
    • Event Parsing
    • Filtering
    • Output Formatting
    • One More Thing About libsinsp
  • Rule Engine
  • Conclusion
• 4. Data Sources
  • System Calls
    • Examples
    • Observing System Calls
      • strace
      • sysdig
      • Trace files
  • Capturing System Calls
    • Accuracy
    • Performance
    • Scalability
    • So What About Stability and Security?
    • Kernel-Level Instrumentation Approaches
      • Kernel modules
      • eBPF
  • The Falco Drivers
    • Which Driver Should You Use?
    • Capturing System Calls Within Containers
  • Running the Falco Drivers
    • Kernel Module
    • eBPF Probe
    • Using Falco in Environments Where Kernel Access Is Not Available: pdig
    • Running Falco with pdig
  • Falco Plugins
    • Plugin Architecture Concepts
    • How Falco Uses Plugins
  • Conclusion
• 5. Data Enrichment
  • Understanding Data Enrichment for Syscalls
    • Operating System Metadata
    • Container Metadata
    • Kubernetes Metadata
  • Data Enrichment with Plugins
  • Conclusion
• 6. Fields and Filters
  • What Is a Filter?
  • Filtering Syntax Reference
    • Relational Operators
    • Logical Operators
    • Strings and Quoting
  • Fields
    • Argument Fields Versus Enrichment Fields
    • Mandatory Fields Versus Optional Fields
    • Field Types
  • Using Fields and Filters
    • Fields and Filters in Falco
    • Fields and Filters in sysdig
  • Falcos Most Useful Fields
    • General
    • Processes
    • File Descriptors
    • Users and Groups
    • Containers
    • Kubernetes
    • CloudTrail
    • Kubernetes Audit Logs
  • Conclusion
• 7. Falco Rules
  • Introducing Falco Rules Files
  • Anatomy of a Falco Rules File
    • Rules
    • Macros
    • Lists
    • Rule Tagging
    • Declaring the Expected Engine Version
  • Replacing, Appending to, and Disabling Rules
    • Replacing Macros, Lists, and Rules
    • Appending to Macros, Lists, and Rules
    • Disabling Rules
      • Disabling rules from the command line
      • Disabling rules by overriding the enabled flag
  • Conclusion
• 8. The Output Framework
  • Falcos Output Architecture
  • Output Formatting
  • Output Channels
    • Standard Output
    • Syslog Output
    • File Output
    • Program Output
    • HTTP Output
    • gRPC Output
    • Other Logging Options
  • Conclusion
• III. Running Falco in Production
• 9. Installing Falco
  • Choosing Your Setup
  • Installing Directly on the Host
    • Using a Package Manager
      • Using apt (.deb package)
      • Using yum (.rpm package)
      • Completing the installation
      • Switching to the eBPF probe
      • Using a plugin
    • Without Using a Package Manager
    • Managing the Driver
  • Running Falco in a Container
    • Syscall Instrumentation Scenario
      • Fully privileged mode
      • Least privileged mode
    • Plugin Scenario
  • Deploying to a Kubernetes Cluster
    • Using Helm
    • Using Manifests
  • Conclusion
• 10. Configuring and Running Falco
  • Configuring Falco
  • Differences Among Installation Methods
    • Host Installation
    • Containers
    • Kubernetes Deployments
  • Command-Line Options and Environment Variables
    • Configuration Settings
    • Instrumentation Settings (Syscalls Only)
    • Data Enrichment Settings (Syscalls Only)
    • Ruleset Settings
    • Output Settings
    • Other Settings for Debugging and Troubleshooting
  • Configuration File
  • Ruleset
    • Loading Rules Files
    • Tuning the Ruleset
  • Using Plugins
  • Changing the Configuration
  • Conclusion
• 11. Using Falco for Cloud Security
  • Why Falco for AWS Security?
  • Falcos Architecture and AWS Security
    • Detection Examples
  • Configuring and Running Falco for CloudTrail Security
    • Receiving Log Files Through an SQS Queue
      • Terraform-based deployment
      • Manual deployment
    • Reading Events from an S3 Bucket or the Local Filesystem
      • S3 bucket
      • Local filesystem path
  • Extending Falcos AWS Ruleset
  • What About Other Clouds?
  • Conclusion
• 12. Consuming Falco Events
  • Working with Falco Outputs
    • falco-exporter
      • Host installation
      • Running in a container
      • Deploying to Kubernetes
    • Falcosidekick
      • Host installation
      • Running in a container
      • Deploying to Kubernetes
  • Observability and Analysis
  • Getting Notified
  • Responding to Threats
  • Conclusion
• IV. Extending Falco
• 13. Writing Falco Rules
  • Customizing the Default Falco Rules
  • Writing New Falco Rules
    • Our Rule Development Method
      • 1. Replicate the events you want to detect
      • 2. Capture the events and save them in a trace file
      • 3. Craft and test the condition filter with the aid of sysdig
      • 4. Craft and test the output with the aid of sysdig
      • 5. Convert the sysdig command line into a rule
      • 6. Validate the rule in Falco
      • 7. Modularize and optimize the rule
      • 8. Create a regression
      • 9. Share the rule with the community
  • Things to Keep in Mind When Writing Rules
    • Priorities
    • Noise
    • Performance
    • Tagging
  • Conclusion
• 14. Falco Development
  • Working with the Codebase
    • The falcosecurity/falco Repository
    • The falcosecurity/libs Repository
    • Building Falco from Source
  • Extending Falco Using the gRPC API
  • Extending Falco with Plugins
    • Preparing a Plugin in Go
    • Plugin State and Initialization
    • Adding Event Sourcing Capability
    • Adding Field Extraction Capability
    • Finalizing the Plugin
    • Building a Plugin Written in Go
    • Using Plugins While Developing
  • Conclusion
• 15. How to Contribute
  • What Does It Mean to Contribute to Falco?
  • Where Should I Start?
  • Contributing to Falcosecurity Projects
    • Issues
    • Pull Requests
      • Git conflict resolution and linear history
      • The Developer Certificate of Origin
  • Conclusion
• Index

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