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CCSP SNRS Exam Certification Guide


  • Sorry, this book is no longer in print.
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  • Description
  • Sample Content
  • Updates
  • Copyright 2006
  • Edition: 1st
  • Book
  • ISBN-10: 1-58720-153-4
  • ISBN-13: 978-1-58720-153-0

Official self-study test preparation guide for the Cisco SNRS exam 642-502

  • Attack threats
  • Router management and administration
  • Authentication, Authorization, and Accounting (AAA) and Cisco Secure Access Control Server
  • Cisco IOS® Firewall feature set
  • Securing networks with Cisco routers
  • Mitigating Layer 2 attacks
  • IPsec and Easy Virtual Private Network (VPN)
  • Security Device Manager (SDM)

CCSP SNRS Exam Certification Guide is a best-of-breed Cisco® exam study guide that focuses specifically on the objectives for the SNRS exam. Network security engineers Greg Bastien, Sara Nasseh, and Christian Degu share preparation hints and test-taking tips, helping you identify areas of weakness and improve your knowledge of router and switch security. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics.

CCSP SNRS Exam Certification Guide presents you with an organized test preparation routine through the use of proven series elements and techniques. “Do I Know This Already” quizzes open each chapter and allow you to decide how much time you need to spend on each section. Foundation summary information gives you a quick refresher whenever you need it. Challenging chapter-ending review questions help you assess your knowledge and reinforce key concepts.

The companion CD-ROM contains a powerful test engine that allows you to focus on individual topic areas or take complete, timed exams. The assessment engine also tracks your performance and provides feedback module-by-module basis, presenting question-by-question remediation to the text.

Well-regarded for its level of detail, assessment features, and challenging review questions and exercises, this book helps you master the concepts and techniques that will enable you to succeed on the exam the first time.

CCSP SNRS Exam Certification Guide is part of a recommended learning path from Cisco Systems® that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press®. To find out more about instructor-led training, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit


Companion CD-ROM

The CD-ROM contains an electronic copy of the book and over 200 practice questions for the SNRS exam, all available in study mode, test mode, and flash card format.

Includes a FREE 45-Day Online Edition

This volume is part of the Exam Certification Guide Series from Cisco Press. Books in this series provide officially developed exam preparation materials that offer assessment, review, and practice to help Cisco Career Certification candidates identify weaknesses, concentrate their study efforts, and enhance their confidence as exam day nears.

Online Sample Chapter

CCSP SNRS Exam Self-Study: Mitigating Layer 2 Attacks

Downloadable Sample Chapter

Download - 151 KB -- Chapter 14: Mitigating Layer 2 Attacks

Table of Contents


Part I     Overview of Network Security

Chapter 1       Network Security Essentials

“Do I Know This Already?” Quiz

Foundation Topics

Defining Network Security

Balancing Business Needs with Network Security Requirements

Network Security Policies

Security Policy Goals

Security Guidelines

Network Security as a Process

Network Security as a Legal Issue

Foundation Summary

Network Security Policies

Security Policy Goals

Security Guidelines

Network Security as a Process


Chapter 2       Defining and Detailing Attack Threats

“Do I Know This Already?” Quiz

Foundation Topics


Self-Imposed Network Vulnerabilities

Technology Weakness


Intruder Motivations

Lack of Understanding of Computers or Networks

Intruding for Curiosity

Intruding for Fun and Pride

Intruding for Revenge

Intruding for Profit

Intruding for Political Purposes

Types of Network Attacks

Reconnaissance Attacks

Access Attacks

DoS Attacks

Foundation Summary


Self-Imposed Network Vulnerabilities


Intruder Motivations

Types of Network Attacks


Chapter 3       Defense in Depth

“Do I Know This Already?” Quiz

Foundation Topics

Overview of Defense in Depth

Foundation Summary


Part II   Managing Cisco Routers

Chapter 4       Basic Router Management

“Do I Know This Already?” Quiz

Foundation Topics

Router Configuration Modes

Accessing the Cisco Router CLI

Cisco IOS Firewall Features

Foundation Summary

Router Configuration Modes

Accessing the Cisco Router CLI

Cisco IOS Firewall Features


Chapter 5       Secure Router Administration

“Do I Know This Already?” Quiz

Foundation Topics

Privilege Levels

Securing Console Access

Configuring the enable Password

enable secret Command

service password-encryption Command

Configuring Multiple Privilege Levels

Warning Banners

Interactive Access

Securing vty Access

SSH Protocol

Setting Up SSH on a Cisco IOS Router or Switch

Secure Copy

Port Security for Ethernet Switches

Configuring Port Security


Foundation Summary



Chapter 6       Authentication

“Do I Know This Already?” Quiz

Foundation Topics


Configuring Line Password Authentication

Configuring Username Authentication

Remote Security Servers

PAP, CHAP, and EAP Authentication




Foundation Summary


Chapter 7       Authentication, Authorization, and Accounting

“Do I Know This Already?” Quiz

Foundation Topics

AAA Overview




Configuring AAA Services

Configuring AAA Authentication

Configuring AAA Authorization

Configuring AAA Accounting

Troubleshooting AAA

Foundation Summary


Chapter 8       Configuring RADIUS and TACACS+ on Cisco IOS Software

“Do I Know This Already?” Quiz

Foundation Topics

Configuring TACACS+ on Cisco IOS Software

TACACS+ Authentication Example

TACACS+ Authorization Example

TACACS+ Accounting Example

AAA TACACS+ Testing and Troubleshooting

Configuring RADIUS on Cisco IOS Software

RADIUS Authentication Example

RADIUS Authorization Example

RADIUS Accounting Example

RADIUS Configuration Testing and Troubleshooting

Foundation Summary


Chapter 9       Cisco Secure Access Control Server

“Do I Know This Already?” Quiz

Foundation Topics

Cisco Secure ACS for Windows





Replicating, Synchronizing, and Backing Up Databases

Database Replication

RDBMS Synchronization

Database Backup

Cisco Secure ACS for Windows Architecture






CSTacacs and CSRadius

Authenticating Users

Local Database

Windows NT/2000 AD

Generic LDAP User Database

Token Server

Enabling User Changeable Passwords

Foundation Summary


Chapter 10     Administration of Cisco Secure Access Control Server for Windows

“Do I Know This Already?” Quiz

Foundation Topics

Basic Deployment Factors for Cisco Secure ACS

Hardware Requirements

Operating System Requirements

Browser Compatibility

Performance Considerations

AAA Clients

Installing Cisco Secure ACS for Microsoft Windows

Cisco Secure ACS Deployment Sequence

Troubleshooting Cisco Secure ACS for Microsoft Windows

Authentication Problems

Troubleshooting Authorization Problems

Administration Issues

Foundation Summary


Part IV IOS Firewall Feature Set

Chapter 11     Securing Networks with Cisco Routers

“Do I Know This Already?” Quiz

Foundation Topics

Defining ACLs

Determining When to Configure Access Lists

Types of IP ACLs

Configuring ACLs on a Router

Simple Network Management Protocol

Controlling Interactive Access Through a Browser

Disabling Directed Broadcasts

Routing Protocol Authentication

Defining Small Server Services

Disabling Finger Services

Disabling Network Time Protocol

Disabling Cisco Discovery Protocol

Foundation Summary


Chapter 12     The Cisco IOS Firewall and Advanced Security Feature Set

“Do I Know This Already?” Quiz

Foundation Topics

Cisco IOS Firewall and Advanced Security Feature Set

Authentication Proxy

DoS Protection

Logging and Audit Trail

Port-to-Application Mapping

URL Filtering

Foundation Summary


Chapter 13     Cisco IOS Intrusion Prevention System

“Do I Know This Already?” Quiz

Foundation Topics


Cisco IOS IPS Features

Cisco IOS IPS Functions

Cisco IOS IPS Restrictions

Cisco IOS IPS Application

Cisco IOS IPS Configuration Tasks

Initializing the Cisco IOS IPS

Configuring the Notification Type

Configuring the Router Maximum Queue for Alarms

Defining the Protected Network

Working with Cisco IOS IPS Signatures and Rules

Loading IPS-Based Signatures

Creating and Applying IPS Rules

Verifying the Cisco IOS IPS Configuration

Cisco IOS IPS Deployment Strategies

Foundation Summary


Chapter 14     Mitigating Layer 2 Attacks

“Do I Know This Already?” Quiz

Foundation Topics

Types of Attacks

CAM Table Overflow Attacks

VLAN Hopping Attacks

STP Manipulation Attacks

MAC Address Spoofing–Man-in-the-Middle Attacks

Private VLAN Vulnerabilities

DHCP Starvation Attacks

IEEE 802.1x EAP Attacks

Factors Affecting Layer 2 Mitigation Techniques

Foundation Summary


Chapter 15     Context-Based Access Control

“Do I Know This Already?” Quiz

Foundation Topics

Context-Based Access Control Features

Detecting and Protecting Against DoS Attacks

Generating Alerts and Audit Trails

How CBAC Works

CBAC Restrictions

Supported Protocols

CPU and Performance Impact

Configuring CBAC

Selecting an Interface

Configuring IP ACLs at the Interface

Configuring Global Timeouts and Thresholds

Port to Application Mapping

Defining an Inspection Rule

Applying the Inspection Rule to an Interface

Verifying and Debugging CBAC

Debugging CBAC

Configuring CBAC Example

Foundation Summary


Chapter 16     Authentication Proxy and the Cisco IOS Firewall

“Do I Know This Already?” Quiz

Foundation Topics

Understanding Authentication Proxy

How Authentication Proxy Works

What Authentication Proxy Looks Like

Authentication Proxy and the Cisco IOS Firewall

Configuring Authentication Proxy on the Cisco IOS Firewall

Authentication Proxy Configuration Steps

Authentication Proxy Configuration Examples

Using Authentication Proxy with TACACS+

Step 1: Complete the Network Configuration

Step 2: Complete the Interface Configuration

Step 3: Complete the Group Setup

Using Authentication Proxy with RADIUS

Limitations of Authentication Proxy

Foundation Summary


Chapter 17     Identity-Based Networking Services

“Do I Know This Already?” Quiz

Foundation Topics

IBNS Overview

IEEE 802.1x

802.1x Components

How 802.1x Works

Port State

Selecting EAP


Cisco Lightweight EAP

EAP Transport Layer Security

Protected EAP

EAP Flexible Authentication via Secure Tunneling

EAP Methods Comparison

Cisco Secure ACS

Foundation Summary


Chapter 18     Configuring 802.1x Port-Based Authentication

“Do I Know This Already?” Quiz

Foundation Topics

802.1x Port-Based Authentication Configuration Tasks

802.1x Mandatory Configuration

Enabling 802.1x Authentication

Configuring the Switch-to-RADIUS Server Communication

802.1x Optional Configurations

Enabling Periodic Re-Authentication

Manually Re-Authenticating a Client Connected to a Port

Changing the Quiet Period

Changing the Switch-to-Client Retransmission Time

Setting the Switch-to-Client Frame-Retransmission Number

Enabling Multiple Hosts

Configuring a Guest VLAN

Resetting the 802.1X Configuration to the Default Values

Displaying 802.1x Statistics and Status

Foundation Summary


Part V  VPN

Chapter 19     Building a VPN Using IPsec

“Do I Know This Already?” Quiz

Foundation Topics

Configuring a Cisco Router for IPsec Using Preshared Keys

How IPsec Works

Step 1: Select the IKE and IPsec Parameters

Step 2: Configure IKE

Step 3: Configure IPsec

Step 4: Test and Verify the IPsec Configuration

Configuring Manual IPsec

Configuring IPsec Using RSA-Encrypted Nonces

Configure the RSA Keys

Foundation Summary

Configure a Cisco Router for IPsec Using Preshared Keys

Verifying the IKE and IPsec Configuration

Explain the Issues Regarding Configuring IPsec Manually and Using RSA-Encrypted Nonces


Chapter 20     Scaling a VPN Using IPsec with a Certificate Authority

“Do I Know This Already?” Quiz

Foundation Topics

Advanced IPsec VPNs Using Cisco Routers and CAs

Digital Signatures, Certificates, and Certificate Authorities

Overview of Cisco Router CA Support


Configuring the Cisco Router for IPsec VPNs Using CA Support

Foundation Summary

Advanced IPsec VPNs Using Cisco Routers and CAs


Chapter 21     Troubleshooting the VPN Configuration on a Cisco Router

“Do I Know This Already?” Quiz

Foundation Topics

show Commands

show crypto ca certificates Command

show crypto isakmp policy Command

show crypto ipsec sa Command

show crypto ipsec security-association lifetime Command

show crypto ipsec transform-set Command

show crypto isakmp key Command

show crypto map Command (IPsec)

show crypto key pubkey-chain rsa Command

show crypto key mypubkey rsa Command

debug Commands

debug crypto isakmp Command

debug crypto key-exchange Command

debug crypto engine Command

debug crypto ipsec Command

debug crypto pki messages Command

debug crypto pki transactions Command

clear Commands

clear crypto sa Command

clear crypto isakmp Command

clear crypto sa counters Command

Foundation Summary


Chapter 22     Configuring Remote Access Using Easy VPN

“Do I Know This Already?” Quiz

Foundation Topics

Describe the Easy VPN Server

Describe the Easy VPN Remote

Easy VPN Server Functionality

How Cisco Easy VPN Works?

Configuring the Easy VPN Server

Easy VPN Modes of Operation

Foundation Summary

Describe the Easy VPN Server

Easy VPN Server Functionality

Configuring the Easy VPN Server

Easy VPN Modes of Operation


Part VI Enterprise Network Management

Chapter 23     Security Device Manager

“Do I Know This Already?” Quiz

Foundation Topics

Security Device Manager Overview

Hardware Requirements

Operating System Requirements

Browser Compatibility

Installing SDM Software

SDM User Interface

SDM Wizards

SDM LAN Wizard

Using SDM to Configure a Firewall

Using SDM to Configure a VPN

Using SDM to Perform Security Audits

Using the Factory Reset Wizard

Using SDM Advanced Options

Using SDM Monitor Mode

Foundation Summary


Part VII            Scenarios

Chapter 24     Final Scenarios

Task 1–Configure Cisco Secure ACS for AAA on Miami Network Devices

Task 2–Configure and Secure Miami Router

Task 3–Configure 802.1x on Miami User Switches

Task 4–Configure Miami User Switches and Router to Mitigate Layer 2 Attacks

Task 5–Configure PEAP with Cisco Secure ACS

Task 6–Prepare the Network for IPsec Using Preshared Keys

Establish a Common Convention for Connectivity Between Locations

Configure Initial Setup of the Router and Verify Connectivity

Prepare for IKE and IPsec

Define the Preshared Key

Task 7–Configure IKE Using Preshared Keys

Enable IKE

Create the IKE Policy

Configure the Preshared Key

Verify the IKE Configuration

Task 8–Configure IPsec Using Preshared Keys

Configure Transform Sets and SA Parameters

Configure IPsec SA Lifetimes

Configure Crypto ACLs

Configure Crypto Maps

Apply the Crypto Map to the Interface

Task 9–Configure IKE and IPsec on a Cisco Router

Enable IKE

Create an IKE Policy Using RSA Signatures

Configure Transform Sets and SA Parameters

Configure IPsec SA Lifetimes

Configure Crypto ACLs

Configure Crypto Maps

Apply the Crypto Map to the Interface

Task 10–Prepare the Network for IPsec Using Digital Certificates

Configure Initial Setup of the Router and Verify Connectivity

Prepare for IKE and IPsec

Configure CA Support

Task 11–Test and Verify IPsec CA Configuration

Display IKE Policies

Display Transform Sets

Display Configured crypto maps

Display the Current State of IPsec SAs

Clear Any Existing SAs

Enable Debug Output for IPsec Events

Enable Debug Output for ISAKMP Events

Observe the IKE and IPsec Debug Outputs

Verify IKE and IPsec SAs

Task 12–Configure Authentication Proxy on the Miami Router

Configure AAA

Configure the HTTP Server

Configure Authentication Proxy

Test and Verify the Authentication Proxy Configuration

Task 13–Configure CBAC on the Miami Router

Task 14–Configure Miami Router with IPS Using SDM

Task 15–Verify and Monitor Miami Router with

Task 16–Configure Easy VPN Server Using SDM

Task 17–Configure Easy VPN Remote Using SDM

Part VIII           Appendix

Appendix A    Answers to the “Do I Know This Already?” Quizzes and Q&A Sections



Download - 94 KB -- Index


Errata -- 30.5 KB

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