Extrusion detection : security monitoring for internal intrusions

著者

    • Bejtlich, Richard

書誌事項

Extrusion detection : security monitoring for internal intrusions

Richard Bejtlich

Addison-Wesley, c2006

  • pbk. : alk. paper

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この図書・雑誌をさがす

注記

Includes bibliographical references and index

HTTP:URL=http://www.loc.gov/catdir/toc/ecip061/2005027490.html Information=Table of contents only

収録内容

  • Detecting and controlling intrusions
  • Network security monitoring revisited
  • Defensible network architecture
  • Extrusion detection illustrated
  • Enterprise network instrumentation
  • Layer 3 network access control
  • Network security operations
  • Traffic threat assessment
  • Network incident response
  • Network forensics
  • Internal intrusions
  • Traffic threat assessment case study
  • Malicious bots

内容説明・目次

内容説明

Overcome Your Fastest-Growing Security Problem: Internal, Client-Based Attacks Today's most devastating security attacks are launched from within the company, by intruders who have compromised your users' Web browsers, e-mail and chat clients, and other Internet-connected software. Hardening your network perimeter won't solve this problem. You must systematically protect client software and monitor the traffic it generates. Extrusion Detection is a comprehensive guide to preventing, detecting, and mitigating security breaches from the inside out. Top security consultant Richard Bejtlich offers clear, easy-to-understand explanations of today's client-based threats and effective, step-by-step solutions, demonstrated against real traffic and data. You will learn how to assess threats from internal clients, instrument networks to detect anomalies in outgoing traffic, architect networks to resist internal attacks, and respond effectively when attacks occur. Bejtlich's The Tao of Network Security Monitoring earned acclaim as the definitive guide to overcoming external threats. Now, in Extrusion Detection, he brings the same level of insight to defending against today's rapidly emerging internal threats. Whether you're an architect, analyst, engineer, administrator, or IT manager, you face a new generation of security risks. Get this book and protect yourself. Coverage includes Architecting defensible networks with pervasive awareness: theory, techniques, and tools Defending against malicious sites, Internet Explorer exploitations, bots, Trojans, worms, and more Dissecting session and full-content data to reveal unauthorized activity Implementing effective Layer 3 network access control Responding to internal attacks, including step-by-step network forensics Assessing your network's current ability to resist internal attacks Setting reasonable corporate access policies Detailed case studies, including the discovery of internal and IRC-based bot nets Advanced extrusion detection: from data collection to host and vulnerability enumeration About the Web Site Get book updates and network security news at Richard Bejtlich's popular blog, taosecurity.blogspot.com, and his Web site, www.bejtlich.net.

目次

Foreword. Preface. I. DETECTING AND CONTROLLING INTRUSIONS. 1. Network Security Monitoring Revisited. Why Extrusion Detection? Defining The Security Process Security Principles Network Security Monitoring Theory Network Security Monitoring Techniques Network Security Monitoring Tools Conclusion 2. Defensible Network Architecture. Monitoring the Defensible Network Controlling the Defensible Network Minimizing the Defensible Network Keeping the Defensible Network Current Conclusion 3. Extrusion Detection Illustrated. Intrusion Detection Defined Extrusion Detection Defined History of Extrusion Detection Extrusion Detection Through NSM Conclusion 4. Enterprise Network Instrumentation. Common Packet Capture Methods PCI Tap Dual Port Aggregator Tap 2X1 10/100 Regeneration Tap 2X1 10/100 SPAN Regeneration Tap Matrix Switch Link Aggregator Tap Distributed Traffic Collection with Pf Dup-To Squid SSL Termination Reverse Proxy Conclusion 5. Layer 3 Network Access Control. Internal Network Design Internet Service Provider Sink Holes Enterprise Sink Holes Using Sink Holes to Identify Internal Intrusions Internal Intrusion Containment Notes on Enterprise Sink Holes in the Field Conclusion II. NETWORK SECURITY OPERATIONS. 6. Traffic Threat Assessment. Why Traffic Threat Assessment? Assumptions First Cuts Looking for Odd Traffic Inspecting Individual Services: NTP Inspecting Individual Services: ISAKMP Inspecting Individual Services: ICMP Inspecting Individual Services: Secure Shell Inspecting Individual Services: Whois Inspecting Individual Services: LDAP Inspecting Individual Services: Ports 3003 to 9126 TCP Inspecting Individual Services: Ports 44444 and 49993 TCP Inspecting Individual Services: DNS Inspecting Individual Services: SMTP Inspecting Individual Services: Wrap-Up Conclusion 7. Network Incident Response. Preparation for Network Incident Response Secure CSIRT Communications Intruder Profiles Incident Detection Methods Network First Response Network-Centric General Response and Remediation Conclusion 8. Network Forensics. What Is Network Forensics? Collecting Network Traffic as Evidence Protecting and Preserving Network-Based Evidence Analyzing Network-Based Evidence Presenting and Defending Conclusions Conclusion III. INTERNAL INTRUSIONS. 9. Traffic Threat Assessment Case Study. Initial Discovery Making Sense of Argus Output Argus Meets Awk Examining Port 445 TCP Traffic Were the Targets Compromised? Tracking Down the Internal Victims Moving to Full Content Data Correlating Live Response Data with Network Evidence Conclusion 10. Malicious Bots. Introduction to IRC Bots Communication and Identification Server and Control Channels Exploitation and Propagation Final Thoughts on Bots Dialogue with a Bot Net Admin Conclusion Epilogue Appendix A: Collecting Session Data in an Emergency. Appendix B: Minimal Snort Installation Guide. Appendix C: Survey of Enumeraiton Methods. Appendix D: Open Source Host Enumeration. Index.

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