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Highland Park Public Library

Highland Park Public Library. Introduction and application Of 802.11 wireless networks. What are we covering?. What is 802.11b? g? preN Setting up a home wireless network. Fun with Wireless. Questions & Answers. Nobrainer. Cheaper & Easier, no wiring Share Broadband

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Highland Park Public Library

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  1. Highland Park Public Library Introduction and application Of 802.11 wireless networks

  2. What are we covering? • What is 802.11b? g? preN • Setting up a home wireless network. • Fun with Wireless. • Questions & Answers

  3. Nobrainer • Cheaper & Easier, no wiring • Share Broadband • Share printers and other resources • ‘untethered’ Internet access • Work anywhere, collaborate

  4. Get Rich Quick!

  5. Get Rich Quick! Just checking if you’re paying attention!

  6. 802.11b

  7. 802.11b • DSSS- Direct Sequence Spread Spectrum

  8. 802.11b • DSSS- Direct Sequence Spread Spectrum • 11 channels

  9. 802.11b • DSSS- Direct Sequence Spread Spectrum • 11 channels • Starts at 2412 MHz

  10. 802.11b • DSSS- Direct Sequence Spread Spectrum • 11 channels • Starts at 2412 MHz • spaced 5 MHz apart

  11. 802.11b • DSSS- Direct Sequence Spread Spectrum • 11 channels • Starts at 2412 MHz • spaced 5 MHz apart • channel bandwidth is about 20 MHz

  12. 802.11b • DSSS- Direct Sequence Spread Spectrum • 11 channels • Starts at 2412 MHz • spaced 5 MHz apart • channel bandwidth is about 20 MHz • 3 effective non overlapping channels (1,6,11)

  13. 802.11b • DSSS- Direct Sequence Spread Spectrum • 11 channels

  14. 802.11b • DSSS- Direct Sequence Spread Spectrum • 11 channels • Support bandwidths of: 1, 2, 5.5, and 11 Mbps

  15. 802.11 • DSSS- Direct Sequence Spread Spectrum • 11 channels • Security • WEP (Wired Equivalent Privacy) authentication • 40/128 bit encryption • MAC(Media Access Control) access lists.

  16. 802.11b • Support bandwidths up to 11 Mbps 802.11g • Support bandwidths up to 54 Mbps 802.11preN • Support bandwidths up to 108 Mbps

  17. Typical Home Networks

  18. Typical Home Networks • Internet Access

  19. Typical Home Networks • Internet Access • Modem • Cable Modem • DSL

  20. Wireless • Best Value is to buy a Access point switch combo

  21. Wireless • Best Value is to buy a Access point switch combo • Several vendors • Dlink, Linksys, Belken, Motorola, etc

  22. Wireless • Best Value is to buy a Access point switch combo • Several vendors • Dlink, Linksys, Xsense, Farallon, etc • Typical Features • Web based admin • Firewall • DHCP Server (Auto Configueration) • Switch for wired PCs

  23. Wireless net internet COAX cable enters the cable modem, and Ethernet exits and connects to the access point, The access point acts as a single client on the cable network

  24. Wireless net internet The access point is a router and serves as a firewall, DHCP Server and switch

  25. Wireless net internet You can connect computers via Ethernet, they reside on a private segment 10.0.0.x

  26. Wireless net internet Wireless computers have their own IP network. 10.0.1.x 10.0.0.x

  27. Wireless net internet 10.0.1.x 10.0.0.x

  28. What are we covering? • What is 802.11b? • Setting up a home wireless network. • Fun with 802.11b. • Questions & Answers

  29. Wireless fun

  30. Wireless fun

  31. Wireless fun

  32. Wireless fun

  33. Thank you • Questions Peter Billson Pete@ELBnet.com http://www.ELBnet.com

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