Member Name: Alvin Tse Service Site: Pui Tak Center Site Location: Chicago, IL Project Description: Alvin Tse spent his TechMission Corps service year with the Pui Tak Center in Chicago, IL. At Pui Tak Center, Alvin helped establish various tech based resources with a specific emphasis on online maintenance. Alvin's final project is a PowerPoint presentation on the various functions of wireless networks. It details various types of networks and illustrates their functions.

1. Wireless Networking By Alvin Tse

2. Governing Bodies and Organizations FCC – Federal Communications Commission http://www.fcc.gov/ IETF – Internet Engineering Task Force http://www.ietf.org/ IEEE – Institute Of Electrical and Electronics Engineers http://www.ieee.org/portal/site Air Defense http://www.airdefense.net/ Cisco Systems, Inc. http://www.cisco.com/ Wi-Fi Alliance http://www.wi-fi.org/

3. Benefits and Drawbacks Benefits Mobility Reduced Costs Flexible Distance Drawbacks Dead Spots Interference Interoperability Security

4. Standards IEEE – 802.11 802.11 2.4GHz 2Mbps 802.11b 2.4GHz 11Mbps 802.11g 2.4GHz 54Mbps 802.11a 5.0GHz 54Mbps 802.11n 5.0 & 2.4 GHz 144Mbps

5. Architecture Site To Site / Point to Point Point to Multipoint / Hub and Spoke Last Mile Wireless Internet Service Provider (WISP)

6. Site to Site / Point to Point

7. Point to Multipoint / Hub and Spoke

8. Last Mile / WISP

9. Devices Access Points Root Mode Bridge Mode Repeater Mode Antennas Omni Directional / Dipole Semi Directional Highly Directional

10. Root Mode

11. Bridge Mode

12. Repeater Mode

13. Omni Directional / Dipole

14. Omni Directional Outdoor

15. Omni Directional Indoor

16. Semi Directional

17. Semi Directional - Yagi

18. Semi Directional - Patch

19. Highly Directional - Dish

20. Highly Directional - Grid

21. Security WEP – Wired Equivalent Privacy WPA – Wi-Fi Protected Access Broadcast SSID off MAC Filtering Redirecting Packets Authentication EAP (Extensible Authentication Protocol) LEAP (Lightweight Extensible Authentication Protocol) PEAP (Protected Extensible Authentication Protocol) RADIUS (Remote Authentication Dial In User Service) VPN

22. Authentication RADIUS

23. Authentication VPN