Highland Park Public Library

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Highland Park Public Library

• Introduction and application
• Of 802.11 wireless networks

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What are we covering?

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

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Nobrainer

• Cheaper Easier, no wiring
• Share Broadband
• Share printers and other resources
• untethered Internet access
• Work anywhere, collaborate

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Get Rich Quick!
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Get Rich Quick!

• Just checking if youre paying attention!

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802.11b
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802.11b

• DSSS- Direct Sequence Spread Spectrum

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802.11b

• DSSS- Direct Sequence Spread Spectrum
• 11 channels

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802.11b

• DSSS- Direct Sequence Spread Spectrum
• 11 channels
• Starts at 2412 MHz

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802.11b

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

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802.11b

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

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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)

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802.11b

• DSSS- Direct Sequence Spread Spectrum
• 11 channels

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802.11b

• DSSS- Direct Sequence Spread Spectrum
• 11 channels
• Support bandwidths of 1, 2, 5.5, and 11 Mbps

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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.

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802.11b

• Support bandwidths up to 11 Mbps

802.11g

• Support bandwidths up to 54 Mbps

802.11preN

• Support bandwidths up to 108 Mbps

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Typical Home Networks
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Typical Home Networks

• Internet Access

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Typical Home Networks

• Internet Access
• Modem
• Cable Modem
• DSL

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Wireless

• Best Value is to buy a Access point switch combo

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Wireless

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

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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

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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
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Wireless net
internet
The access point is a router and serves as a
firewall, DHCP Server and switch
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Wireless net
internet
You can connect computers via Ethernet, they
reside on a private segment
10.0.0.x
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Wireless net
internet
Wireless computers have their own IP network.
10.0.1.x
10.0.0.x
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Wireless net
internet
10.0.1.x
10.0.0.x
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What are we covering?

• What is 802.11b?
• Setting up a home wireless network.
• Fun with 802.11b.
• Questions Answers

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Wireless fun
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Wireless fun
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Wireless fun
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Wireless fun
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Thank you

• Questions
• Peter Billson
• Pete_at_ELBnet.com
• http//www.ELBnet.com