1. © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 1 Version 4.0 Basic Security Networking for Home and Small Businesses – Chapter 8

2. 2 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Objectives  Identify and describe the various networking threats.  Identify different methods of attack.  Describe security procedures and applications.  Describe the features of a firewall and how it can be used to protect against an attack.

3. 3 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Networking Threats  Describe major risks of network intrusion

4. 4 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Networking Threats  Define the sources of network intrusion.

5. 5 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Networking Threats  Describe social engineering and phishing

6. 6 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Methods of Attack  Describe viruses, worms, and Trojan horses.

7. 7 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Methods of Attack  Denial of Service and Brute Force attacks

8. 8 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Methods of Attack  Describe spyware, tracking cookies, adware and pop- ups.

9. 9 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Methods of Attack  Describe Spam

10. 10 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Procedures and Applications  Defining a security policy

11. 11 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Procedures and Applications  Define common security procedures

12. 12 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Procedures and Applications  Describe how updates and patches relate to security issues.

13. 13 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Procedures and Applications  Anti-virus software

14. 14 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Procedures and Applications  SPAM prevention

15. 15 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Procedures and Applications  Anti-Spyware

16. 16 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Firewall Features and How to Use them to Protect Against an Attack  What is a firewall?

17. 17 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Firewall Features and How to Use them to Protect Against an Attack  Using a Firewall to Protect Against an Attack

18. 18 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Firewall Features and How to Use them to Protect Against an Attack  Vulnerability Analysis

19. 19 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Firewall Features and How to Use them to Protect Against an Attack  Security Best Practices

20. 20 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Summary  Networks can be open to intrusion through vulnerabilities in software, hardware attacks, or the weaknesses of individuals.  Effective network security is based on a variety of products and services, combined with a thorough security policy.  A firewall controls traffic between networks and helps prevent unauthorized access.

21. 21 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public