1. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 Configure a Wireless Router Basic Wireless Concepts & Configuration Chapter 7 Modified by Pete Brierley

2. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 2 Objectives  Describe the components and operations of basic wireless LAN topologies.  Describe the components and operations of basic wireless LAN security.  Configure and verify basic wireless LAN access.  Configure and troubleshoot wireless client access.

3. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 3

4. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 4

5. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 5 802.11-based wireless infrastructure

6. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 6 How wireless networks operate

7. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 7

8. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 8 Threats to wireless LAN security

9. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 9 Light weight Extensible Authentication Protocol LEAP Remote Authentication Dial-In User Service (RADIUS)

10. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 10

11. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 11

12. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 12 Configure a wireless NIC

13. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 13 How to solve access point firmware issues

14. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 14 How to solve access point firmware issues

15. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 15

16. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 16 Extended Service Set (ESS)

17. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 17

18. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 18

19. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 19

20. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 20 Summary  Wireless LANs use standards such as IEEE 802.11a IEEE 802.11b IEEE 802.11g IEEE 802.11n  Basic Service set –Mobile clients use a single access point for connectivity  Extended service set –Multiple access point that share an SSID

21. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 21 Summary  WLAN security practices/methods include –MAC address filtering –SSID making –Implementing WPA2  Configuration of wireless NIC and access point –Configure both of them the same way SSID –Ensure that the latest firmware is installed  Troubleshooting WLANs include doing the following: –Check channel setting –Check for interference

22. © 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 22 END Configuring a Wireless Router Chapter 7