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Wireless Networking

Wireless Networking. By Alvin Tse. 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

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Wireless Networking

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  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

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