Topic Coverage – Consumer Why Wireless? Advantages of Wireless How Does Wireless Work – Consumer? Various Types x – A vs. B vs. G Which is best for you? Consumer Costs Security WEP vs. WPA 4 Steps to securing your wireless network A word about antennas… A word about nationwide “Hotspots” and “War Driving”

Topic Coverage – Business Why Wireless? Advantages of Wireless Performing a Site Survey – Business Business Costs and Benefits Why lease a line when you can own the connection? Tsunami® Transmitters – Pictorial Preview Security Access to company intranet limited via VPN or other method Outsiders can still piggy-back on Internet connectivity Example: Corner of Country Club Road and George Street Bottom line on business

Why Wireless? Wireless allows the average person to easily setup a home network Wireless is cheap Go anywhere without the wires How Does Wireless Work? Wireless, also called “Wi-Fi” meaning wireless fidelity, uses radio waves Various frequencies, home consumers will use either 2.4GHz or 5GHz, signals are broadcast to surrounding area Broadcast is susceptible to degradation and attenuation as well as interference from 2.4GHz cordless phones and microwaves 3G or 3GHz is band that requires licensing, used with cell phones

Which Standard is Best for You? A, B, G (IEEE Standards) Depends on factors such as budget, distance desired, speeds, security Wi-Fi is cheap: in order B, G, A (See comparison chart) What Hardware is Needed? Router or Access Point, PC or laptop hardware (See pictorial review) Do I need a router or access point? But What About Security? WEP – “Wired Equivalent Privacy” old standard (see chart) WPA – “Wi-Fi Protected Access” newer standard, replaced WEP WPA can be broken by obtaining (via “sniffing”) 4 key network packets WPA2 to replace WPA

Simple vs. Advanced Protection Basic Protection NAT (Network Address Translation), talked about in class Advanced Protection SPI (Stateful Packet Inspection) firewall VPN (Virtual Private Network) software for secure “tunnel” via encrypted connection 4 Steps to Secure Your Wireless Network Change the default SSID (network name) Example: Linksys, the most widely sold wireless brand, uses the default SSID of “linksys” on all products SSID should be changed on a regular basis

4 Steps Continued Change the default SSID (network name) Example: Linksys, the most widely sold wireless brand, uses the default SSID of “linksys” on all products SSID should be changed on a regular basis Disable SSID broadcast option Won’t allow outsiders to detect or “hear” your network Change default password on device By default, all Linksys devices use a blank user name and “admin” as the password Enable MAC address filtering, set security to WPA Antennas can be changed and/or modified to increase range Homemade antennas can beam signal for miles In lieu of changing/modifying antenna a booster can be used for local network (see picture)

What are “Hot Spots” and “War Driving”? “Hot Spots” are areas in which wireless networks are present “Hot Spots” allow connectivity, either free of charge or for a fee Local “Hot Spots” include Border’s Books and Starbucks Currently over 13,942 known “Hot Spots” in U.S. Maps available online to locate “Hot Spots” to facilitate Internet connectivity in various situations, such as while on vacation Map of “Hot Spots” of U.S. and NY with slideshow “War Driving” is the process of detection “Hot Spots” with mobile equipment “War Driving” can infringe upon others since those that engage in activity piggy-back on bandwidth “War Chalking” is act of using GPS to electronically mark “Hot Spots” which are then posted online for others illegal use

ISP’s can “beam” broadband via wireless to rural locations Wireless provides consumers in rural areas the benefits of broadband Why Do Businesses Use Wireless Networks? Ease of use, no CAT5 cabling to run! Cheaper since no cabling needs installed Allows companies to designate areas for brainstorming sessions which are done with laptops and PDA’s Provide connectivity between buildings especially when fiber optic connection is not feasible Why a Site Survey? Site Surveys are intended to find best locations for antenna placement, to find areas of dead space lacking connectivity and area of low bandwidth

ISP’s can “beam” broadband via wireless to rural locations Wireless provides consumers in rural areas the benefits of broadband “Beam” can be transmitted for long distances, best connectivity is achieved via “line of sight” “Beam” can penetrate trees, buildings, etc. if powerful enough Now onto business usage…

How Do You Perform a Site Survey? Site Surveys are normally performed via one of two methods: Handheld devices that detect wireless signal Via mathematical modeling software that calculates coverage based upon CAD drawings of building layout (see pictures) Wireless connections in business can save money Cheaper connectivity between sites, no need to lease a T-1 or larger lines (no monthly fees) Upgrading from one type of network, such as token ring using coaxial cabling to Ethernet, can be accomplished without incurring expense of cable runs Tsunami® brand wireless devices: 10, 100, 1,000Mbps connectivity

Business and Wireless Security VPN software has become standard to protect company intranet Other measures in place, such as new security measure developed by Cisco®, to further propagate enterprise security through EAP (Extensible Authentication Protocol) L.E.A.P. – Lightweight Extensible Authentication Protocol P.E.A.P. – Protected Extensible Authentication Protocol Both use an authentication algorithm Used in conjunction with RADIUS (Remote Authentication Dial-In User Service) servers

Business and the Bottom Line – Consumer: A Summation Wireless consumer market generated $751.9 million in sales in 4 th quarter 2003, represents a 40% gain over same quarter of 2002 Wireless connectivity provides rural consumers with broadband access Wireless will continue to grow at rapid rate as security measures become better and as public perception changes Business and the Bottom Line – Business: A Summation Businesses will increasingly move towards wireless networks as security improves to an acceptable level Businesses will reap the benefits of wireless network connectivity by saving in expenditures for infrastructure improvement Wireless connectivity provides viable, feasible option for LAN, WAN and MAN connectivity, especially between sites

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