Intrusion Detection with Snort

Table of contents

1. Copyright
2. About the Author
3. Acknowledgments
4. We Want to Hear from You!
5. Reader Services
6. Introduction
7. Intrusion Detection Primer
   1. IDSs Come in Different Flavors
   2. Methods of Detecting Intrusions
   3. Origin of Attacks
   4. Orchestrating an Attack
   5. The IDS Reality
   6. Summary
8. Network Intrusion Detection with Snort
   1. Snort's Specifications
   2. Detecting Suspicious Traffic via Signatures
   3. Detecting Suspicious Traffic via Heuristics
   4. Gathering Intrusion Data
   5. Alerting via Output Plug-ins
   6. Prioritizing Alerts
   7. Distributed Snort Architecture
   8. Securing Snort
   9. Shortcomings
   10. Summary
9. Dissecting Snort
   1. Feeding Snort Packets with Libpcap
   2. Preprocessors
   3. The Detection Engine
   4. Output Plugins
   5. Summary
10. Planning for the Snort Installation
    1. Defining an IDS Policy
    2. Deciding What to Monitor
    3. Designing Your Snort Architecture
    4. Planning for Maintenance
    5. Incident Response Plan
    6. Responding to an Incident
    7. Restoring to a Normal State
    8. Summary
11. The Foundation—Hardware and Operating Systems
    1. Hardware Performance Metrics
    2. Picking a Platform
    3. The Monitoring Segment
    4. Distributing Traffic to Multiple Sensors
    5. Summary
12. Building the Server
    1. Installation Guide Notes
    2. Red Hat Linux 7.3
    3. Post-Installation Tasks
    4. Installing the Snort Server Components
    5. Summary
13. Building the Sensor
    1. Installation Guide Notes
    2. Installing the Snort Sensor Components
    3. Installing Snort
    4. Implementing Barnyard
    5. Summary
14. Building the Analyst's Console
    1. Windows
    2. Linux
    3. Testing the Console
    4. Working with ACID
    5. Summary
15. Additional Installation Methods
    1. The Hybrid Server/Sensor
    2. Snort on OpenBSD
    3. Snort on Windows
    4. Summary
16. Tuning and Reducing False Positives
    1. Pre-Tuning Activities
    2. Tuning the Network for Snort
    3. Filtering Traffic with Snort
    4. Tuning the Preprocessors
    5. Refining the Ruleset
    6. Organize Your Rules
    7. Designing a Targeted Ruleset
    8. Tuning MySQL
    9. Tuning ACID
    10. Summary
17. Real-Time Alerting
    1. An Overview of Real-Time Alerting with Snort
    2. Prioritization of Alerts
    3. Alerting with the Hybrid
    4. Alerting with Distributed Snort
    5. Summary
18. Basic Rule Writing
    1. Fundamental Rule Writing Concepts
    2. Rule Syntax
    3. Writing Rules
    4. Summary
19. Upgrading and Maintaining Snort
    1. Choosing a Snort Management Application
    2. IDS Policy Manager
    3. SnortCenter
    4. Upgrading Snort
    5. Summary
20. Advanced Topics in Intrusion Prevention
    1. A Warning Concerning Intrusion Prevention
    2. Planning an Intrusion Prevention Strategy
    3. Snort Inline Patch
    4. SnortSam
    5. Summary
21. Troubleshooting
    1. Snort Issues
    2. ACID Issues
    3. IDS Strategy
22. Rule Documentation
    1. Not Suspicious Traffic
    2. Unknown Traffic
    3. Potentially Bad Traffic
    4. Attempted Information Leak
    5. Attempted Denial of Service
    6. Attempted User Privilege Gain
    7. Unsuccessful User Privilege Gain
    8. Attempted Administrator Privilege Gain
    9. Successful Administrator Privilege Gain
23. Index