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Wireless 101

Wireless 101. Brian Heil Consultant, Ezrasoft Consulting & Design. Overview. Why Wireless? Security Bandwidth Cost. Why Wireless?. ‘Fixed’ wireless network Dubuque County Library Epworth Branch Wireless ‘HotSpot’ What are you providing? What are the risks? What is the cost?.

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Wireless 101

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  1. Wireless 101 Brian Heil Consultant, Ezrasoft Consulting & Design

  2. Overview • Why Wireless? • Security • Bandwidth • Cost

  3. Why Wireless? • ‘Fixed’ wireless network • Dubuque County Library Epworth Branch • Wireless ‘HotSpot’ • What are you providing? • What are the risks? • What is the cost?

  4. Security • Wireless networks are basically insecure • What can we do to fix it? • Throw money at the problem • Take steps to mitigate the risks

  5. Securely Configured WLAN(translation $$$) - from Internet Security Systems Wireless LAN Security Technical Whitepaper

  6. SecurityRisk Mitigation • Do not use default configuration options on Access Points (wireless routers) – the bad guys know all of these! • Use as much security provided by the Access Point as possible • WEP • WPA • Hide AP as much as possible

  7. SecurityRisk Mitigation • Cover only areas you want to have access. Leakage and maximum transmit power widen the attack surface. • Client protection • Personal firewalls • Up to date virus scanners

  8. Bandwidth • 802.11b bandwidth is 11 Mbps • 802.11g bandwidth is 54 Mbps • What is your bandwidth out of the building? • all LAN and WLAN nodes share this pipe

  9. Bandwidth • Access points provide limited connectivity • How many connected clients will you allow = how many Access Points you will purchase. • More potential problems with configuration of APs

  10. Cost • SOHO vs Enterprise equipment • Number of clients • Security costs money • Hardware costs • Staff costs

  11. Policies • In lieu of money your WLAN policy is the key

  12. Policies • Before you implement WLAN consider • What you are offering and why • Security risks to your LAN • Cost of installation as well as cost of maintaining security • Impact on current infrastructure

  13. Questions? • http://www.ezrasoft.com/ila • Slideshow • Links to resources • See especially the article from WebJunction entitled: Ten Steps to Wireless Internet Access in Your Library

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