Implementing Cisco IOS Network Security (IINS): (CCNA Security exam 640-553) (Authorized Self-Study Guide)

By Catherine Paquet
Published Apr 2, 2009 by Cisco Press.

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Description

Sample Content

Updates

Copyright 2009
Edition: 1st

eBook
ISBN-10: 1-58705-878-2
ISBN-13: 978-1-58705-878-3

Implementing Cisco IOS Network Security (IINS) is a Cisco-authorized, self-paced learning tool for CCNA® Security foundation learning. This book provides you with the knowledge needed to secure Cisco® routers and switches and their associated networks. By reading this book, you will gain a thorough understanding of how to troubleshoot and monitor network devices to maintain integrity, confidentiality, and availability of data and devices, as well as the technologies that Cisco uses in its security infrastructure.

This book focuses on the necessity of a comprehensive security policy and how it affects the posture of the network. You will learn how to perform basic tasks to secure a small branch type office network using Cisco IOS® security features available through the Cisco Router and Security Device Manager (SDM) web-based graphical user interface (GUI) and through the command-line interface (CLI) on Cisco routers and switches. The author also provides, when appropriate, parallels with Cisco ASA appliances.

Whether you are preparing for CCNA Security certification or simply want to gain a better understanding of Cisco IOS security fundamentals, you will benefit from the information provided in this book.

Implementing Cisco IOS Network Security (IINS) is part of a recommended learning path from Cisco 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 www.cisco.com/go/authorizedtraining.

Develop a comprehensive network security policy to counter threats against information security
Configure routers on the network perimeter with Cisco IOS Software security features
Configure firewall features including ACLs and Cisco IOS zone-based policy firewalls to perform basic security operations on a network
Configure site-to-site VPNs using Cisco IOS features
Configure IPS on Cisco network routers
Configure LAN devices to control access, resist attacks, shield other network devices and systems, and protect the integrity and confidentiality of network traffic

This volume is in the Certification Self-Study Series offered by Cisco Press®. Books in this series provide officially developed self-study solutions to help networking professionals understand technology implementations and prepare for the Cisco Career Certifications examinations.

Chapter 1 Introduction to Network Security Principles

Examining Network Security Fundamentals

The Need for Network Security

Network Security Objectives

Data Classification

Security Controls

Response to a Security Breach

Laws and Ethics

Examining Network Attack Methodologies

Adversaries, Motivations, and Classes of Attack

Classes of Attack and Methodology

The Principles of Defense in Depth

IP Spoofing Attacks

Confidentiality Attacks

Integrity Attacks

Availability Attacks

Best Practices to Defeat Network Attacks

Examining Operations Security

Secure Network Life Cycle Management

Principles of Operations Security

Network Security Testing

Disaster Recovery and Business Continuity Planning

Understanding and Developing a Comprehensive Network Security Policy

Security Policy Overview

Security Policy Components

Standards, Guidelines, and Procedures

Security Policy Roles and Responsibilities

Risk Analysis and Management

Principles of Secure Network Design

Security Awareness

Cisco Self-Defending Networks

Changing Threats and Challenges

Building a Cisco Self-Defending Network

Cisco Integrated Security Portfolio

Summary

References

Review Questions

Chapter 2 Perimeter Security

Securing Administrative Access to Cisco Routers

General Router Security Guidelines

Introduction to the Cisco Integrated Services Router Family

Configuring Secure Administration Access

Configuring Multiple Privilege Levels

Configuring Role-Based Command-Line Interface Access

Securing the Cisco IOS Image and Configuration Files

Configuring Enhanced Support for Virtual Logins

Delays Between Successive Login Attempts

Generation of System Logging Messages for Login Detection

Configuring Banner Messages

Introducing Cisco SDM

Supporting Cisco SDM and Cisco SDM Express

Launching Cisco SDM Express

Launching Cisco SDM

Navigating the Cisco SDM Interface

Cisco SDM Wizards in Configure Mode

Configuring AAA on a Cisco Router Using the Local Database

Authentication, Authorization, and Accounting

Introduction to AAA for Cisco Routers

Using Local Services to Authenticate Router Access

Configuring AAA on a Cisco Router to Use Cisco Secure ACS

Cisco Secure ACS Overview

TACACS+ and RADIUS Protocols

Installing Cisco Secure ACS for Windows

Configuring the Server

Configuring TACACS+ Support on a Cisco Router

Troubleshooting TACACS+

Implementing Secure Management and Reporting

Planning Considerations for Secure Management and Reporting

Secure Management and Reporting Architecture

Using Syslog Logging for Network Security

Using Logs to Monitor Network Security

Using SNMP to Manage Network Devices

Configuring an SSH Daemon for Secure Management and Reporting

Enabling Time Features

Locking Down the Router

Vulnerable Router Services and Interfaces

Management Service Vulnerabilities

Performing a Security Audit

Cisco AutoSecure

Chapter Summary

References

Review Questions

Chapter 3 Network Security Using Cisco IOS Firewalls

Introducing Firewall Technologies

Firewall Fundamentals

Firewalls in a Layered Defense Strategy

Static Packet-Filtering Firewalls

Application Layer Gateways

Dynamic or Stateful Packet-Filtering Firewalls

Other Types of Firewalls

Cisco Family of Firewalls

Developing an Effective Firewall Policy

ACL Fundamentals

ACL Wildcard Masking

Using ACLs to Control Traffic

ACL Considerations

Configuring ACLs Using SDM

Using ACLs to Permit and Deny Network Services

Configuring a Cisco IOS Zone-Based Policy Firewall

Zone-Based Policy Firewall Overview

Configuring Zone-Based Policy Firewalls Using the Basic Firewall Wizard

Manually Configuring Zone-Based Policy Firewalls Using Cisco SDM

Monitoring a Zone-Based-Firewall

Summary

References

Review Questions

Chapter 4 Fundamentals of Cryptography

Examining Cryptographic Services

Cryptology Overview

Symmetric and Asymmetric Encryption Algorithms

Block and Stream Ciphers

Encryption Algorithm Selection

Cryptographic Hashes

Key Management

Introducing SSL VPNs

Examining Symmetric Encryption

Symmetric Encryption Overview

DES: Features and Functions

3DES: Features and Functions

AES: Features and Functions

SEAL: Features and Functions

Rivest Ciphers: Features and Functions

Examining Cryptographic Hashes and Digital Signatures

Overview of Hash Algorithms

Overview of Hashed Message Authentication Codes

MD5: Features and Functions

SHA-1: Features and Functions

Overview of Digital Signatures

DSS: Features and Functions

Examining Asymmetric Encryption and PKI

Asymmetric Encryption Overview

RSA: Features and Functions

DH: Features and Functions

PKI Definitions and Algorithms

PKI Standards

Certificate Authorities

Summary

References

Review Questions

Chapter 5 Site-to-Site VPNs

VPN Overview

VPN Types

Cisco VPN Product Family

Introducing IPsec

Encryption Algorithms

Diffie-Hellman Exchange

Data Integrity

Authentication

IPsec Advantages

IPsec Protocol Framework

Authentication Header

Encapsulating Security Payload

Tunnel Mode Versus Transport Mode

IPsec Framework

IKE Protocol

IKE Phase 1

IKE Phase 1: Example

IKE Phase 2

Building a Site-to-Site IPsec VPN

Site-to-Site IPsec VPN Operations

Configuring IPsec

Verifying the IPsec Configuration

Configuring IPsec on a Site-to-Site VPN Using Cisco SDM

Introducing the Cisco SDM VPN Wizard Interface

Site-to-Site VPN Components

Using the Cisco SDM Wizards to Configure Site-to-Site VPNs

Completing the Configuration

Summary

References

Review Questions

Chapter 6 Network Security Using Cisco IOS IPS

Introducing IDS and IPS

Types of IDS and IPS Systems

IPS Actions

Event Monitoring and Management

Cisco IPS Management Software

Cisco Router and Security Device Manager

Cisco Security Monitoring, Analysis, and Response System

Cisco IDS Event Viewer

Cisco Security Manager

Cisco IPS Device Manager

Host and Network IPS

Host-Based IPS

Network-Based IPS

Comparing HIPS and Network IPS

Introducing Cisco IPS Appliances

Cisco IPS 4200 Series Sensors

Cisco ASA AIP SSM

Cisco Catalyst 6500 Series IDSM-2

Cisco IPS AIM

Signatures and Signature Engines

Examining Signature Micro-Engines

Signature Alarms

IPS Best Practices

Configuring Cisco IOS IPS

Cisco IOS IPS Features

Configuring Cisco IOS IPS Using Cisco SDM

Configuring Cisco IOS IPS Using CLI

Configuring IPS Signatures

Monitoring IOS IPS

Verifying IPS Operation

Summary

References

Review Questions

Chapter 7 LAN, SAN, Voice, and Endpoint Security Overview

Examining Endpoint Security

Operating System Vulnerabilities

Application Vulnerabilities

Buffer Overflows

IronPort

Cisco NAC Products

Cisco Security Agent

Endpoint Security Best Practices

Examining SAN Security

Defining SANs

SAN Fundamentals

SAN Security Scope

Examining Voice Security

VoIP Fundamentals

Voice Security Threats

Defending Against VoIP Hacking

Mitigating Layer 2 Attacks

Basic Switch Operation

Mitigating VLAN Attacks

Preventing Spanning Tree Protocol Manipulation

CAM Table Overflow Attacks

MAC Address Spoofing Attacks

Using Port Security

Additional Switch Security Features

Layer 2 Best Practices

Summary

References

Review Questions

Appendix Answers to Chapter Review Questions

Index

Errata

Download the errata of the Parent Book ISBN

Submit Errata

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