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Basic Security



              Networking for Home and Small Businesses – Chapter
              8




Version 4.0                                © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   1
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.




                              © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   2
Networking Threats
 Describe major risks of network intrusion




                            © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   3
Networking Threats
 Define the sources of network intrusion.




                            © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   4
Networking Threats
 Describe social engineering and phishing




                           © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   5
Methods of Attack
 Describe viruses, worms, and Trojan horses.




                           © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   6
Methods of Attack
 Denial of Service and Brute Force attacks




                            © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   7
Methods of Attack
 Describe spyware, tracking cookies, adware and pop-
  ups.




                           © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   8
Methods of Attack
 Describe Spam




                    © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   9
Security Procedures and Applications
 Defining a security policy




                               © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   10
Security Procedures and Applications
 Define common security procedures




                          © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   11
Security Procedures and Applications
 Describe how updates and patches relate to security
  issues.




                           © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   12
Security Procedures and Applications
 Anti-virus software




                        © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   13
Security Procedures and Applications
 SPAM prevention




                    © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   14
Security Procedures and Applications
 Anti-Spyware




                  © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   15
Firewall Features and How to Use them to
Protect Against an Attack
 What is a firewall?




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




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




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




                            © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   19
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.




                             © 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   20
© 2007 Cisco Systems, Inc. All rights reserved.   Cisco Public   21

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CCNA Discovery 1 - Chapter 8

  • 1. Basic Security Networking for Home and Small Businesses – Chapter 8 Version 4.0 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1
  • 2. 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. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 2
  • 3. Networking Threats  Describe major risks of network intrusion © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 3
  • 4. Networking Threats  Define the sources of network intrusion. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 4
  • 5. Networking Threats  Describe social engineering and phishing © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 5
  • 6. Methods of Attack  Describe viruses, worms, and Trojan horses. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 6
  • 7. Methods of Attack  Denial of Service and Brute Force attacks © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 7
  • 8. Methods of Attack  Describe spyware, tracking cookies, adware and pop- ups. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 8
  • 9. Methods of Attack  Describe Spam © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 9
  • 10. Security Procedures and Applications  Defining a security policy © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 10
  • 11. Security Procedures and Applications  Define common security procedures © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 11
  • 12. Security Procedures and Applications  Describe how updates and patches relate to security issues. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 12
  • 13. Security Procedures and Applications  Anti-virus software © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 13
  • 14. Security Procedures and Applications  SPAM prevention © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 14
  • 15. Security Procedures and Applications  Anti-Spyware © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 15
  • 16. Firewall Features and How to Use them to Protect Against an Attack  What is a firewall? © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 16
  • 17. Firewall Features and How to Use them to Protect Against an Attack  Using a Firewall to Protect Against an Attack © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 17
  • 18. Firewall Features and How to Use them to Protect Against an Attack  Vulnerability Analysis © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 18
  • 19. Firewall Features and How to Use them to Protect Against an Attack  Security Best Practices © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 19
  • 20. 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. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 20
  • 21. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 21