Introduction.
I. CISCO SAFE OVERVIEW.
1. What Is SAFE?
SAFE: A Security Blueprint for Enterprise Networks.
SAFE: Extending the Security Blueprint to Small, Midsize, and Remote-User Networks.
SAFE VPN: IPSec Virtual Private Networks in Depth.
SAFE: Wireless LAN Security in Depth-Version 2.
SAFE: IP Telephony Security in Depth.
Additional SAFE White Papers.
Looking Toward the Future.
2. SAFE Design Fundamentals.
"Do I Know This Already?" Quiz.
Foundation Topics.
SAFE Design Philosophy.
Security and Attack Mitigation Based on Policy.
Security Implementation Throughout the Infrastructure.
Secure Management and Reporting.
Authentication and Authorization for Access to Critical Resources.
Intrusion Detection for Critical Resources and Subnets.
Support for Emerging Networked Applications.
Cost-Effective Deployment.
Security Threats.
Structured Threats.
Unstructured Threats.
Internal Threats.
External Threats.
Foundation Summary.
Q&A.
3. SAFE Design Concepts.
"Do I Know This Already?" Quiz.
Foundation Topics.
SAFE Architecture Overview.
Examining SAFE Design Fundamentals.
Understanding SAFE Axioms.
Routers Are Targets.
Switches Are Targets.
Hosts Are Targets.
Networks Are Targets.
Applications Are Targets.
Foundation Summary.
Q&A.
4. Understanding SAFE SMR Network Modules.
"Do I Know This Already?" Quiz.
Foundation Topics.
SAFE Modules Overview.
Understanding the Campus Module.
Key Campus Module Devices.
Alternative Campus Module Designs.
Understanding the Corporate Internet Module.
Key Corporate Internet Module Devices.
Alternative Medium-Sized Network Corporate Internet Module Designs.
Understanding the WAN Module.
Foundation Summary.
Q&A.
II. UNDERSTANDING SECURITY RISKS AND MITIGATION TECHNIQUES.
5. Defining a Security Policy.
"Do I Know This Already?" Quiz.
Foundation Topics.
The Need for Network Security.
Security Policy Characteristics, Goals, and Components.
Security Policy Components.
Characteristics of a Good Security Policy.
Security Policy Goals.
Risk Assessment.
The Security Wheel.
Foundation Summary.
Q&A.
References.
6. Classifying Rudimentary Network Attacks.
"Do I Know This Already?" Quiz.
Foundation Topics.
Reconnaissance Attacks.
Denial of Service Attacks.
Nondistributed Denial of Service Attacks.
Distributed Denial of Service Attacks.
Unauthorized Access Attacks.
Application Layer Attacks.
IIS Directory Traversal Vulnerability.
Buffer Overflow.
String Attack.
Trust Exploitation Attacks.
Foundation Summary.
Q&A.
7. Classifying Sophisticated Network Attacks.
"Do I Know This Already?" Quiz.
Foundation Topics.
IP Spoofing.
Packet Sniffers.
Password Attacks.
Man-In-The-Middle Attacks.
Port Redirection.
Virus and Trojan-Horse Applications.
Foundation Summary.
Q&A.
8. Mitigating Rudimentary Network Attacks.
"Do I Know This Already?" Quiz.
Foundation Topics.
Mitigating Reconnaissance Attacks.
Network Posture Visibility.
Application Hardening.
Mitigating Denial of Service Attacks.
Antispoof Features.
Anti-DoS Features.
Traffic-Rate Limiting.
Protecting Against Unauthorized Access.
Mitigating Application Layer Attacks.
Guarding Against Trust Exploitation.
Foundation Summary.
Q&A.
9. Mitigating Sophisticated Network Attacks.
"Do I Know This Already?" Quiz.
Foundation Topics.
Mitigating IP Spoofing Attacks.
Access Control.
RFC 2827 Filtering.
Guarding Against Packet Sniffers.
Authentication.
Switched Infrastructure.
Antisniffing Tools.
Cryptography.
Mitigating Password Attacks.
Password Testing.
User Education.
Mitigating Man-In-The-Middle Attacks.
Mitigating Port Redirection Attacks.
Guarding Against Virus and Trojan-Horse Applications.
Foundation Summary.
Q&A.
10. Network Management.
"Do I Know This Already?" Quiz.
Foundation Topics.
Network Management Overview.
In-Band Network Management.
Out-of-Band Network Management.
Mitigating Management Traffic Attacks.
Network Management Protocols.
Remote-Access Protocols.
Reporting and Logging Protocol: Syslog.
Monitoring and Control Protocol: Simple Network Management Protocol.
File Management Protocols: Trivial File Transfer Protocol.
Time Synchronization Protocols: Network Time Protocol.
Foundation Summary.
Q&A.
III. CISCO SECURITY PORTFOLIO.
11. Cisco Perimeter Security Products.
"Do I Know This Already?" Quiz.
Foundation Topics.
Perimeter Security.
Routers.
Firewalls.
Cisco Secure Intrusion Detection System.
Cisco Secure IDS Sensors.
Management Center for IDS Sensors.
Host-Based IPS and the Cisco Security Agent.
CSA Software.
Management Center for CSA.
Selecting the Right Product.
Foundation Summary.
Q&A.
12. Cisco Network Core Security Products.
"Do I Know This Already?" Quiz.
Foundation Topics.
Secure Connectivity.
Cisco VPN-Enabled Routers.
Cisco Secure PIX Firewall.
Cisco VPN 3000 Series Concentrator.
VPN Client.
Identity Management-Cisco Secure Access Control Server.
Security Management.
CiscoWorks VPN/Security Management Solution.
Cisco Secure Policy Manager.
Cisco AVVID.
Network Infrastructure.
Service Control.
Communication Services.
Design Considerations.
Foundation Summary.
Q&A.
IV. DESIGNING AND IMPLEMENTING SAFE NETWORKS.
13. Designing Small SAFE Networks.
"Do I Know This Already?" Quiz.
Foundation Topics.
Components of SAFE Small Network Design.
Corporate Internet Module in Small Networks.
Mitigating Threats in the Corporate Internet Module.
Design Guidelines for the Corporate Internet Module.
Filtering and Access Control.
Intrusion Detection.
VPN Connectivity.
Design Alternatives for the Corporate Internet Module.
Campus Module in Small Networks.
Mitigating Threats in the Campus Module.
Design Guidelines for the Campus Module.
Design Alternatives for the Campus Module.
Branch Versus Headend/Standalone Considerations for Small Networks.
Foundation Summary.
Q&A.
Reference.
14. Implementing Small SAFE Networks.
"Do I Know This Already?" Quiz.
Foundation Topics.
General Implementation Recommendations.
Using the ISP Router in Small Networks.
Distributed Denial of Service Attacks.
IP Spoofing Attacks.
Using the Cisco IOS Firewall Router in Small Networks.
Cisco IOS Firewall Implementation.
IDS Implementation.
VPN Implementation.
Internal Traffic Filtering.
Public Services Traffic Filtering.
Public Traffic Filtering.
Using the PIX Firewall in Small Networks.
Outside Interface Filtering.
Internal Traffic Filtering.
Public Services Traffic Filtering.
IDS Configuration.
VPN Configuration.
Alternative Implementations.
Foundation Summary.
Q&A.
15. Designing Medium-Sized SAFE Networks.
"Do I Know This Already?" Quiz.
Foundation Topics.
Components of SAFE Medium-Sized Network Design.
Corporate Internet Module in Medium-Sized Networks.
Mitigating Threats in the Corporate Internet Module.
Design Guidelines.
Design Alternatives.
Campus Module in Medium-Sized Networks.
Mitigating Threats in the Campus Module.
Design Guidelines.
Design Alternatives.
WAN Module in Medium-Sized Networks.
Mitigating Threats in the WAN Module.
Design Guidelines.
Design Alternatives.
Branch Versus Headend/Standalone Considerations for Medium-Sized Networks.
Foundation Summary.
Q&A.
Reference.
16. Implementing Medium-Sized SAFE Networks.
"Do I Know This Already?" Quiz.
Foundation Topics.
General Implementation Recommendations.
Using the ISP Router in Medium-Sized Networks.
Distributed Denial of Service Attacks.
IP Spoofing Attacks.
Using the Edge Router in Medium-Sized Networks.
ISP Traffic Filtering.
Public VLAN Traffic Filtering.
Using the Cisco IOS Firewall Router in Medium-Sized Networks.
Using the PIX Firewall in Medium-Sized Networks.
Outside Interface Filtering.
Inside Interface Filtering.
Public Services Segment Filtering.
Remote-Access Segment Filtering.
VPN Configuration.
Network Intrusion Detection System Overview.
Host-Based IPS Overview.
VPN 3000 Series Concentrator Overview.
Configuring the Layer 3 Switch.
VLAN Segregation.
Access Filtering.
Foundation Summary.
Q&A.
17. Designing Remote SAFE Networks.
"Do I Know This Already?" Quiz.
Foundation Topics.
Configuration Options for Remote-User Network Design.
Key Devices for Remote-User Networks.
Mitigating Threats in Remote-User Networks.
Design Guidelines for Remote-User Networks.
Remote-Site Firewall.
Remote-Site Router.
VPN Hardware Client.
Cisco VPN Client.
Foundation Summary.
Q&A.
Reference.
18. Designing Enterprise SAFE Networks.
"Do I Know This Already?" Quiz.
Foundation Topics.
Components of SAFE Enterprise Network Design.
The Enterprise Campus Layer.
The Management Module.
Building Module.
Building Distribution Module.
Core Module.
Server Module.
Edge Distribution Module.
The Enterprise Edge Layer.
The E-Commerce Module.
The VPN and Remote Access Module.
The Corporate Internet Module.
The WAN Module.
Foundation Summary.
Q&A.
19. SAFE IP Telephony Design.
"Do I Know This Already?" Quiz.
Foundation Topics.
Examining SAFE IP Telephony Design Fundamentals.
IP Telephony Network Components.
VoIP Protocols.
Threats to IP Telephony Networks.
Understanding SAFE IP Telephony Axioms.
Voice Networks Are Targets.
Data and Voice Segmentation Is Key.
Telephony Devices Do Not Support Confidentiality.
IP Phones Provide Access to the Data-Voice Segments.
PC-Based IP Phones Require Open Access.
PC-Based IP Phones Are Especially Susceptible to Attack.
Controlling the Voice-to-Data Segment Interaction Is Key.
Establishing Identity Is Key.
Rogue Devices Pose Serious Threats.
Secure and Monitor All Voice Servers and Segments.
Understanding SAFE IP Telephony Network Designs.
Branch Versus Headend Considerations.
IP Telephony Deployment Models.
Small IP Telephony Network Design.
Medium-Sized IP Telephony Network Design.
Large IP Telephony Network Design.
Foundation Summary.
Q&A.
20. SAFE Wireless LAN Design.
"Do I Know This Already?" Quiz.
Foundation Topics.
Basic Wireless Concepts.
Cisco WLAN Portfolio.
SAFE WLAN Axioms.
Wireless Networks Are Targets.
Security Extensions Are Required.
WLAN Design Approach.
Mutual Authentication or EAP WLAN Design.
IPSec WLAN Design.
Large-Enterprise WLAN Design.
EAP Design and Its Alternatives.
IPSec VPN Design and Its Alternatives.
Network Management.
Medium WLAN Design.
EAP Design and Its Alternatives.
IPSec VPN Design and Its Alternatives.
Small WLAN Design.
Remote WLAN Design.
Remote Software-Based VPN WLAN Design.
Remote Hardware-Based VPN WLAN Design.
Foundation Summary.
Q&A.
References.
V. SCENARIOS.
21. Scenarios for Final Preparation.
Scenario 21-1.
Scenario 21-2.
Scenario 21-3.
Scenario 21-4.
Scenario 21-5.
Scenario 21-6.
Scenario 21-7.
Scenario 21-8.
Scenario 21-9.
Scenario 21-10.
Answers to Scenario 21-1.
Answers to Scenario 21-2.
Answers to Scenario 21-3.
Answers to Scenario 21-4.
Answers to Scenario 21-6.
Answers to Scenario 21-7.
Answers to Scenario 21-8.
Answers to Scenario 21-8.
Answers to Scenario 21-9.
Answers to Scenario 21-10.
VI. APPENDIXES.
Appendix A. Answers to the "Do I Know This Already?" Quizzes and Q&A Sections.
Chapter 2.
Chapter 3.
Chapter 4.
Chapter 5.
Chapter 6.
Chapter 7.
Chapter 8.
Chapter 9.
Chapter 10.
Chapter 11.
Chapter 12.
Chapter 13.
Chapter 14.
Chapter 15.
Chapter 16.
Chapter 17.
Chapter 18.
Chapter 19.
Chapter 20.
Appendix B. General Configuration Guidelines for Cisco Router and Switch Security.
Routers.
CatOS Switches.
Glossary.
Index.
CCSP CSI Exam Certification Guide (CCSP Self-Study) is designed for IT and security professionals who are pursuing the Cisco CCSP security certification track and preparing to take the CSI 642-541 exam. The book arms readers with an effective tool to build their confidence, provide practice, offer self-assessment of their knowledge, and point out any potential trouble spots in the exam. Each chapter utilizes all the necessary components to help a reader prepare for the exam, including "Do I Know this Already" quizzes that assess knowledge; Foundation Summary sections that highlight essential concepts; exam topic lists for easy reference; and end-of-chapter review questions to aid retention. The final chapter in the book contains scenarios to help readers prepare for the exam. In addition to an introduction to security topics, the security wheel, and the SAFE philosophy, the book discusses each piece of a network as a security target, addresses secure management and reporting, and covers Cisco's complete line of security products. It covers SAFE devices, network design alternatives, and migration paths. It also covers topics recently added to the exam: security design as it relates to IP telephony, wireless, enterprise networks, and the Cisco Security Agent.
Ido Dubrawsky is a network security architect in the Cisco Systems, Inc., SAFE Architecture Team. He is the primary author of three major SAFE whitepapers. He holds bachelor's and master's degrees in aerospace engineering from the University of Texas at Austin. Ido holds the CISSP, CCNA, and CCDA certifications.
Paul Grey, CCIE No. 10470, is a senior network architect for Boxing Orange Limited, where he provides consultative, design, and implementation services using Cisco products. Paul holds a bachelor's in chemistry and physiology from the University of Sheffield. Paul also holds the CCNP, CCDP, and CCSP certifications.
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