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Network Security Fundamentals
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- Copyright 2005
- Dimensions: 7-3/8" x 9-1/8"
- Pages: 480
- Edition: 1st
- ISBN-10: 1-58705-167-2
- ISBN-13: 978-1-58705-167-8
- eBook (Watermarked)
- ISBN-10: 1-58705-285-7
- ISBN-13: 978-1-58705-285-9
An introduction to the key tools and technologies used to secure network access
- Examine common security vulnerabilities and the defenses used to protect network resources
- Learn about cryptography, including modern-day techniques like 3DES, RSA, hashing, and the use of certificates
- Learn how to design, adopt, and enforce security policies
- Evaluate the nuances of secure network design
- Secure HTTP traffic by hardening operating systems, servers, and browsers
- Protect routers through administrative access policies and services
- Understand what firewalls do and how to implement them to maximum effect
- Inspect and monitor network activity with IDS
- Utilize VPNs for secure remote access
- Learn about PKI technologies
- Examine secure wireless design techniques
- Use logging and auditing tools, such as syslog, SNMP, RMON, and SAA, to manage network traffic
Companies have long been struggling with threats from the hacking community. Keeping pace with the rapid evolution of security technology and the growing complexity of threats is a challenge even in the best of times. The increased focus on security has sent IT managers and engineers scrambling to acquire the proper expertise to implement complex, multilayered solutions.
Network Security Fundamentals introduces the topic of network security in an easy-to-understand and comprehensive manner. This book is designed to provide a fundamental understanding of the various components of a network security architecture and to demonstrate how each component can be implemented to achieve best results. The book uses straightforward language to introduce topics and to show the features, mechanics, and functionality of various network security devices. A series of case studies helps illuminate concepts and shows how you can apply the concepts to solve real-world problems.
Divided into four parts, Network Security Fundamentals takes you on a tour of all the essential technologies and modern defenses at your disposal to help you maintain network uptime and data integrity. Part I covers the basics, introducing terms and concepts and laying the foundation of a solid security structure. The discussion focuses on weaknesses and vulnerabilities along with an overview of the traditional defenses used to thwart attacks. Part II examines two components of security-cryptography and security policies. Part III looks at the various security components. Separate chapters cover web security, router security, firewalls, intrusion detection systems (IDS), remote access security, virtual private networks (VPN), Public Key Infrastructure (PKI), wireless security, and logging and auditing. Each chapter in this section is a self-contained tutorial, allowing you to skip to those topics of greatest interest or primary concern. Part IV includes several reference appendixes, including the Cisco SAFE Blueprint, NSA guidelines, and SANS policies.
Whether you are looking for an introduction to network security principles and practices or a security configuration reference, this book provides you with the invaluable insight you need to protect valuable company resources.
Online Sample Chapter
Downloadable Sample Chapter
Download - 1.69 MB -- Chapter 14: Wireless Security
Table of Contents
1. Network Security Overview.
Weaknesses and Vulnerabilities.
Responsibilities for Network Security.
2. Understanding Vulnerabilities–The Need for Security.
Risk and Vulnerability.
TCP/IP Suite Weaknesses.
TCP/IP Security Issues.
Buffer Overflow Mechanisms.
Buffer Overflow Protection.
Address Resolution Protocol Spoofing.
Domain Name Service Spoofing.
3. Understanding Defenses.
Intrusion Detection System.
PC Card—Based Solutions.
PC Encryption Cards.
Outside and External Security.
Secure Shell Protocol.
Kerberos Encrypted Login Sessions.
Secure Socket Layer (HTTP versus HTTPS).
Sample Password Policy.
II. BUILDING BLOCKS.
Cryptography versus Cryptanalysis.
Symmetric Key Algorithms.
Asymmetric Key Algorithms.
Secure Socket Layer and Transport Layer Security.
5. Security Policies.
Defining a Security Policy?
Importance of a Security Policy.
Incident Handling Process.
Sample Security Policy.
6. Secure Design.
Top-Down Design Practices.
Requirements and Constraints.
Design Activities, Tools, and Techniques.
Defense in Depth.
Stages of the Network.
Return on Investment.
Physical Security Issues.
Securing the Perimeter.
Survivability and Recovery.
Switches and Hubs.
III. TOOLS AND TECHNIQUES.
7. Web Security.
8. Router Security.
Basic Router Security.
Router Security to Protect the Network.
Enhanced Access Lists.
References in This Chapter.
Different Types of Firewalls.
Hardware Firewalls: PIX and NetScreen.
Check Point Software Firewalls.
Enhancements for Firewalls.
Case Study: Placing Filtering Routers and Firewalls.
10. Intrusion Detection System Concepts.
Introduction to Intrusion Detection.
Evasion and Antievasion Techniques.
Organizational Issues and Complications.
Host Sensor Components and Architecture.
Deploying Host-Based Intrusion Detection in the Network.
Network Sensor Components and Architecture.
Deploying Network-Based Intrusion Detection in the Network.
Notification and Reporting.
IDS Management Communications–Monitoring‡the‡Network.
Case Study: Deployment of IDS Sensors in‡the‡Organization and Their Typical Placement.
IDS Placement on the Network Blueprint.
IDS Sensor Initialization and Configuration.
Network Under Attack–IDS Event Viewer.
IDS Active Responses in Action–Blocking a Host.
11. Remote Access.
TACACS+ versus RADIUS.
Case Study: Configuring Secure Remote Access.
TACACS+ Configuration Task List.
Router COMMSROOM1 Setup and Configuration for This Scenario.
Test and Troubleshoot Configuration for This Scenario.
12. Virtual Private Networks.
Generic Routing Encapsulation Tunnels.
Tunnel or Transport Mode.
VPNs with IPSec.
Case Study: Remote Access VPN.
13. Public Key Infrastructure.
Public Key Distribution.
Trusted Third Party.
Case Study: Creating Your Own CA.
14. Wireless Security.
Different WLAN Configurations.
What Is a WLAN?
How Wireless Works.
Setting Up the WLAN Connection.
Risks of Open Wireless Ports.
Open Authentication Vulnerabilities.
Shared Key Authentication Vulnerabilities.
EAP Protocol and the 802.11i Standard.
War-Driving and War-Chalking.
SAFE WLAN Design Techniques and Considerations.
Case Study: Adding Wireless Solutions to a Secure Network.
15. Logging and Auditing.
Simple Network Management Protocol.
Service Assurance Agent.
Appendix A: SAFE Blueprint.
Appendix B: SANS Policies.
Appendix C: NSA Guidelines.
Appendix D: Answers to Chapter Q&A.
Download - 259 KB -- Index
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