Wireless News

2 Free Bluetooth Scanners for WinXP Free Bluetooth Scanners for WinXP FON, based in Spain, is a startup company that wants to provide cheap Wi-Fi access to the world by selling a million routers, which usually cost about $60, for $5 plus shipping. FON, based in Spain, is a startup company that wants to provide cheap Wi-Fi access to the world by selling a million routers, which usually cost about $60, for $5 plus shipping. D-Link has announced the launch of the Securicam DCS-2120 Wireless Internet Camera. Developed for home or small office use, the DCS-2120 provides the ability to remotely view live video and listen to sound from a 3G mobile phone or PDA in real time from anywhere within a mobile's 3G service area. D-Link has announced the launch of the Securicam DCS-2120 Wireless Internet Camera. Developed for home or small office use, the DCS-2120 provides the ability to remotely view live video and listen to sound from a 3G mobile phone or PDA in real time from anywhere within a mobile's 3G service area.

3 Wireless News Distance to the hole: It's a piece of information golfers covet. Distance to the hole: It's a piece of information golfers covet. Golf course managers want to know where their golf carts are Golf course managers want to know where their golf carts are GPS Industries Inc in Vancouver, British Columbia says they can deliver just this kind of data with a combination of GPS and Wi-Fi technologies. GPS Industries Inc in Vancouver, British Columbia says they can deliver just this kind of data with a combination of GPS and Wi-Fi technologies. Called "The Inforemer," their solution begins with a GPS mapping of the entire course, including the distance to hazards and holes. Using this map, a cart-mounted GPS unit relays geographical information to golfers, while a Wi-Fi connection keeps the clubhouse informed as to the cart's location. Called "The Inforemer," their solution begins with a GPS mapping of the entire course, including the distance to hazards and holes. Using this map, a cart-mounted GPS unit relays geographical information to golfers, while a Wi-Fi connection keeps the clubhouse informed as to the cart's location.

4 BlueSniper Rifle Effective up to 1 mile Effective up to 1 mile Uses Gumstix PC Uses Gumstix PC

5 BlueSniper Rifle: Parts Folding Stock - About $50.00 Radome Yagi Antenna - $60. GumStix Embedded PC - $ Total cost apx $350

6 BlueSniper Rifle How To: Building a BlueSniper Rifle How To: Building a BlueSniper Rifle uesniper_pt1/page2.htmlhttp:// uesniper_pt1/page2.htmlhttp:// uesniper_pt1/page2.htmlhttp:// uesniper_pt1/page2.html Gumstix PC Gumstix PC

7 Power over Ethernet (POE) Enclosures for WRT54Gs and POE units Enclosures for WRT54Gs and POE units

8 Back Track Bootable CDRom BackTrack is the result of the merging of two Innovative Penetration Testing live Linux distributions BackTrack is the result of the merging of two Innovative Penetration Testing live Linux distributions Whax (formerly Whoppix) - stand-alone penetration-testing live CD based on KNOPPIXWhax (formerly Whoppix) - stand-alone penetration-testing live CD based on KNOPPIX Auditor - stand-alone penetration- testing live CD also based on KNOPPIXAuditor - stand-alone penetration- testing live CD also based on KNOPPIX

9 Back Track Bootable CDRom Combies the best features of both distributions Combies the best features of both distributions Pays special attention to small details Pays special attention to small details Based on SLAX (Slackware), BackTrack provides user modularity. Based on SLAX (Slackware), BackTrack provides user modularity. The distribution can be easily customized by the user to include personal scripts, additional tools, customized kernels, etc. The distribution can be easily customized by the user to include personal scripts, additional tools, customized kernels, etc.

10 Back Track Bootable CDRom Kismet Kismet Snort Snort NBTScan NBTScan Nikto Nikto Amap Amap Airsnort Airsnort Hotspotter Hotspotter UnicornScan UnicornScan SIPcrack SIPcrack Free/Swan Free/Swan VmPlayer VmPlayer Airodump Airodump Nmap Nmap Ethereal Ethereal Wellenreiter Wellenreiter Nibbler Nibbler Autopsy Autopsy TCPdump TCPdump Wepcrack Wepcrack Aircrack Aircrack And lots more… And lots more…

CWNA Guide to Wireless LANs, Second Edition Chapter Six Planning and Deploying a Wireless LAN

12 Objectives Explain the steps for planning a wireless network Explain the steps for planning a wireless network Tell how to design a wireless LAN Tell how to design a wireless LAN Describe the steps in deploying a wireless network Describe the steps in deploying a wireless network Explain the ways in which to provide user support Explain the ways in which to provide user support

13 Planning for a Wireless Network “If you fail to plan, then you plan to fail” “If you fail to plan, then you plan to fail” Some steps involved in planning wireless networks similar to planning wired network Some steps involved in planning wireless networks similar to planning wired network Many steps significantly differentMany steps significantly different Basic planning steps: Basic planning steps: Assessing needsAssessing needs Weighing benefitsWeighing benefits Calculating costsCalculating costs

14 Assessing Needs: The Need for Mobility Two significant changes in business world over last 15 years: Two significant changes in business world over last 15 years: Workers have electronic tools to access information and accomplish significantly moreWorkers have electronic tools to access information and accomplish significantly more Restructuring of organizational hierarchiesRestructuring of organizational hierarchies Organizations are “flatter” Organizations are “flatter” Teamwork is essential Teamwork is essential Together, can result in decreased productivityTogether, can result in decreased productivity Hinders ability to collaborate and make timely decisions Hinders ability to collaborate and make timely decisions “Mobile office” needed “Mobile office” needed

15 Assessing Needs: The Need for Mobility (continued) A solution to need for mobility is WLANs A solution to need for mobility is WLANs Expand productivity zone of knowledge workersExpand productivity zone of knowledge workers Improve quality and productivity of meetingsImprove quality and productivity of meetings Work can be performed in more locations at more timesWork can be performed in more locations at more times WLANs have been shown to add one to two hours a day of productive time per worker WLANs have been shown to add one to two hours a day of productive time per worker Enabling worker to respond to customers, partners, and colleagues more quicklyEnabling worker to respond to customers, partners, and colleagues more quickly WLANs too often viewed as optional add-on to computer networks WLANs too often viewed as optional add-on to computer networks

16 Assessing Needs: Examining the Business Entity Determine if business case exists for bringing wireless networking into corporate environment Determine if business case exists for bringing wireless networking into corporate environment What is the purpose or mission of the organization?What is the purpose or mission of the organization? Is the current mission expected to change in the future?Is the current mission expected to change in the future? What is the size of the organization?What is the size of the organization? How much growth is anticipated in the organization?How much growth is anticipated in the organization? Obtaining firm conceptual grip on organization as a whole and its current status will reveal if an investment in wireless technology is wise Obtaining firm conceptual grip on organization as a whole and its current status will reveal if an investment in wireless technology is wise

17 Assessing Needs: Reviewing the Current Network Question to ask when examining how organization uses current network: Question to ask when examining how organization uses current network: How does current network support the organization’s mission?How does current network support the organization’s mission? What applications run on the network?What applications run on the network? How many users does network support?How many users does network support? Strengths and weaknesses of the current network?Strengths and weaknesses of the current network? Anticipated growth in network technology?Anticipated growth in network technology? Examining current network status reveals much of this information Examining current network status reveals much of this information Especially applications and number of usersEspecially applications and number of users

18 Assessing Needs: Reviewing the Current Network (continued) Good time to document network in detail: Good time to document network in detail: Number of clientsNumber of clients Types of clientsTypes of clients Number of serversNumber of servers The topology of the networkThe topology of the network What media is being usedWhat media is being used Performance of the networkPerformance of the network Types of devices connected to the networkTypes of devices connected to the network

19 Assessing Needs: Reviewing the Current Network (continued) Table 6-1: Current network table

20 Assessing Needs: Reviewing the Current Network Figure 6-1: Network diagram

21 Determining Benefits: Hard Benefits Benefits that can be easily measured or quantified Benefits that can be easily measured or quantified For WLANs, easily measured in decreased cost of installationFor WLANs, easily measured in decreased cost of installation e.g., elimination of cabling costs e.g., elimination of cabling costs Using wireless technology for MAN or WAN can result in even higher savings Using wireless technology for MAN or WAN can result in even higher savings

22 Determining Benefits: Soft Benefits Benefits that are difficult, if not impossible, to quantify accurately Benefits that are difficult, if not impossible, to quantify accurately Improved productivityImproved productivity Enhanced collaboration and faster responsivenessEnhanced collaboration and faster responsiveness Flexible mobilityFlexible mobility Adherence to standardsAdherence to standards Improved employee satisfactionImproved employee satisfaction

23 Calculating Return on Investment (ROI) Return on investment (ROI): Standard measure of profitability of a project Return on investment (ROI): Standard measure of profitability of a project Total cost of projectTotal cost of project Hardware, software, implementation costs, training, operations staff, maintenance staff and services, and connectivity fees Hardware, software, implementation costs, training, operations staff, maintenance staff and services, and connectivity fees Less tangible costsLess tangible costs Workload management and customer satisfaction Workload management and customer satisfaction Several models for calculating ROI Several models for calculating ROI

24 Calculating Return on Investment (continued) Intel Corporation’s wireless LAN model: Intel Corporation’s wireless LAN model: Implement a pilotImplement a pilot Develop a reportDevelop a report Assemble dataAssemble data Calculate ROICalculate ROI Table 6-2: Three-year WLAN costs and benefits

25 Calculating Return on Investment Figure 6-2: Intel’s ROI model for WLANs

26 Designing the Wireless LAN Involves determining: Involves determining: Which deployment scenario is bestWhich deployment scenario is best Which IEEE wireless network standard should be usedWhich IEEE wireless network standard should be used Type of AP management to implementedType of AP management to implemented Where wireless devices should be locatedWhere wireless devices should be located

27 Determining the Deployment Scenario First step in designing a WLAN is to decide on correct deployment scenario: First step in designing a WLAN is to decide on correct deployment scenario: Ad hoc: Not connected to wired infrastructureAd hoc: Not connected to wired infrastructure Useful where wireless infrastructure does not exist or services to remote networks not required Useful where wireless infrastructure does not exist or services to remote networks not required Infrastructure: WLAN devices connect to wired corporate network via APInfrastructure: WLAN devices connect to wired corporate network via AP Most corporate wireless LANs Most corporate wireless LANs Hotspot: Provides wireless LAN service, for free or for a fee, from variety of public areasHotspot: Provides wireless LAN service, for free or for a fee, from variety of public areas Point-to-point remote wireless bridge: Typically interconnects two LAN segmentsPoint-to-point remote wireless bridge: Typically interconnects two LAN segments

28 Determining the Deployment Scenario Deployment scenarios (continued): Deployment scenarios (continued): Point-to-multipoint remote wireless bridge: Connects multiple LAN segmentsPoint-to-multipoint remote wireless bridge: Connects multiple LAN segments Ethernet to wireless bridge: Connects single device that has an Ethernet port but not an NICEthernet to wireless bridge: Connects single device that has an Ethernet port but not an NIC Wireless gateway: Provide single mechanism for managing and monitoring the wireless networkWireless gateway: Provide single mechanism for managing and monitoring the wireless network

29 Selecting the IEEE Wireless Network Type IEEE b, a, or g IEEE b, a, or g Decision may depend on many factors Decision may depend on many factors Do other devices in area use same frequency range as one of the network types?Do other devices in area use same frequency range as one of the network types? What kind of coverage is needed?What kind of coverage is needed? What types of applications will be used?What types of applications will be used? If broader area of coverage needed, g standard should be considered first If broader area of coverage needed, g standard should be considered first Good balance of coverage area with speedGood balance of coverage area with speed

30 Selecting the IEEE Wireless Network Type If interference is an issue, then a standard should be considered If interference is an issue, then a standard should be considered Only consider b in areas where low bandwidth is acceptable or ad hoc wireless network will be used Only consider b in areas where low bandwidth is acceptable or ad hoc wireless network will be used Slow speed and susceptibility to interferenceSlow speed and susceptibility to interference

31 Deciding upon Access Point Management If using infrastructure wireless network, must decide type of AP management If using infrastructure wireless network, must decide type of AP management Fat access point: AP serves as management point Fat access point: AP serves as management point Configuration must be done through via APConfiguration must be done through via AP Thin access point: Lacks management functions Thin access point: Lacks management functions Management functions moved to Ethernet network switchManagement functions moved to Ethernet network switch Management simplified, centralizedManagement simplified, centralized Handoff time reducedHandoff time reduced Thin access points are proprietaryThin access points are proprietary

32 Deciding upon Access Point Management Thin AP approach does not provide overall solution for managing entire network (wired and wireless) Thin AP approach does not provide overall solution for managing entire network (wired and wireless) Several vendors working on comprehensive network management solutions Several vendors working on comprehensive network management solutions Integrate wireless networks into same deployment, operations, and management as wired networkIntegrate wireless networks into same deployment, operations, and management as wired network e.g., Cisco’s Structured Wireless-Aware Network (SWAN)e.g., Cisco’s Structured Wireless-Aware Network (SWAN)

33 Determining the Location of the Wireless Devices Table 6-3: Interference by objects

34 Ad Hoc Mode Wireless devices communicate directly without an AP Wireless devices communicate directly without an AP Three main considerations: Three main considerations: Stations must be arranged so that they are all within proper distance limitsStations must be arranged so that they are all within proper distance limits All stations must send and receive signals on same frequencyAll stations must send and receive signals on same frequency Hidden node problem must be avoidedHidden node problem must be avoided

35 Ad Hoc Mode Figure 6-3: Ad hoc hidden node problem

36 Infrastructure Mode Positioning APs correctly for an infrastructure WLAN is critical for ensuring that coverage area is sufficient Positioning APs correctly for an infrastructure WLAN is critical for ensuring that coverage area is sufficient Interference by objects must be taken into considerationInterference by objects must be taken into consideration Signal should not extend beyond building’s exterior walls for security reasonsSignal should not extend beyond building’s exterior walls for security reasons In an ESS infrastructure network with multiple APs, important that each AP’s channel set correctly In an ESS infrastructure network with multiple APs, important that each AP’s channel set correctly Adjacent APs using same channel can cause interference and lost framesAdjacent APs using same channel can cause interference and lost frames

37 Infrastructure Mode (continued) Figure 6-4: Interference from using same channel

38 Infrastructure Mode (continued) IEEE b and g networks divide frequency spectrum into 14 overlapping and staggered channels IEEE b and g networks divide frequency spectrum into 14 overlapping and staggered channels Only channels 1, 6,and 11 do not overlapOnly channels 1, 6,and 11 do not overlap Channel reuse: Adjacent APs use nonoverlapping channels (1, 6, and 11) Channel reuse: Adjacent APs use nonoverlapping channels (1, 6, and 11) IEEE a networks have eight nonoverlapping channels IEEE a networks have eight nonoverlapping channels Must ensure APs properly overlap Must ensure APs properly overlap No gaps, but not too close togetherNo gaps, but not too close together

39 Infrastructure Mode (continued) Figure 6-5: Channel reuse

40 Infrastructure Mode (continued) Figure 6-6: Flip flop between access points

41 Infrastructure Mode Must consider number of users who will be associated with APs Must consider number of users who will be associated with APs Consider not only how many users will be associated with each AP but also what they will be doingConsider not only how many users will be associated with each AP but also what they will be doing

42 Deploying a Wireless Network If planning/designing done correctly, deploying can be easiest step If planning/designing done correctly, deploying can be easiest step Must consider actual placement of APs Must consider actual placement of APs Place APs exactly where they were designed to goPlace APs exactly where they were designed to go To avoid interference, better to place APs higherTo avoid interference, better to place APs higher Be careful if placing APs in plenums Be careful if placing APs in plenums If needed, can use PoE If needed, can use PoE Good idea to configure WLAN on own network segment Good idea to configure WLAN on own network segment

43 Providing User Support: Training Planning, designing, and deploying WLAN pointless if users don’t receive required support Planning, designing, and deploying WLAN pointless if users don’t receive required support Training is vital to use of a WLAN Training is vital to use of a WLAN Users must know how to use new hardware and softwareUsers must know how to use new hardware and software Support staff must know how to manage network and diagnose problemsSupport staff must know how to manage network and diagnose problems Increases effectiveness of new wireless networkIncreases effectiveness of new wireless network Minimizes drop in productivity normally associated with installation of a new system Minimizes drop in productivity normally associated with installation of a new system

44 Providing User Support: Training Group training session often most effective training setting Group training session often most effective training setting Preferably done at same time users receive wireless-enabled laptopsPreferably done at same time users receive wireless-enabled laptops Important to set appropriate user expectations for support and how they should request it Important to set appropriate user expectations for support and how they should request it

45 Providing User Support: Support Involves continuing follow-up in answering questions and assisting users Involves continuing follow-up in answering questions and assisting users User support functions can be organized in variety of ways: User support functions can be organized in variety of ways: Establishing informal peer-to-peer support groupsEstablishing informal peer-to-peer support groups Creating formal user support groupsCreating formal user support groups Maintaining a help deskMaintaining a help desk Assigning support to the information technology departmentAssigning support to the information technology department Outsourcing support to a third partyOutsourcing support to a third party

46 Providing User Support: Support Establishing and staffing internal help desk is one of most effective means of support Establishing and staffing internal help desk is one of most effective means of support Central point of contact for users who need assistance using networkCentral point of contact for users who need assistance using network Suggestions regarding a help desk:Suggestions regarding a help desk: One telephone number for help desk One telephone number for help desk Plan for increased call volume after network installed Plan for increased call volume after network installed Problem tracking Problem tracking Use surveys to determine user satisfaction Use surveys to determine user satisfaction Periodically rotate network personnel into help desk Periodically rotate network personnel into help desk Use info from help desk to organize follow-up training Use info from help desk to organize follow-up training

47 Providing User Support: Support User feedback essential when installing new WLAN User feedback essential when installing new WLAN Possibly more essential than technical feedbackPossibly more essential than technical feedback May have IT personnel contact users for feedbackMay have IT personnel contact users for feedback May schedule meetings with users to gather feedbackMay schedule meetings with users to gather feedback

48 Summary The basic steps in planning a wireless network include assessing needs, weighing the benefits, and calculating the costs The basic steps in planning a wireless network include assessing needs, weighing the benefits, and calculating the costs Assessing needs involves understanding the need for mobility, examining the business as a whole, and calculating the potential return on investment Assessing needs involves understanding the need for mobility, examining the business as a whole, and calculating the potential return on investment Benefits for a wireless LAN can be broken into two categories: hard benefits and soft benefits: Hard benefits are those benefits that can be easily measured or quantified, while soft benefits are much more difficult to quantify and measure Benefits for a wireless LAN can be broken into two categories: hard benefits and soft benefits: Hard benefits are those benefits that can be easily measured or quantified, while soft benefits are much more difficult to quantify and measure

49 Summary Designing the layout for the wireless network involves determining which deployment scenario is best, and then deciding which IEEE wireless network standard should be used Designing the layout for the wireless network involves determining which deployment scenario is best, and then deciding which IEEE wireless network standard should be used The type of access point management that should be implemented must be considered, and consideration must be given to the location of the wireless devices The type of access point management that should be implemented must be considered, and consideration must be given to the location of the wireless devices If planning and designing was done correctly, then deploying should be straightforward If planning and designing was done correctly, then deploying should be straightforward

50 Summary Training provides all users as well as network support specialists with the knowledge to effectively operate and support the new WLAN system Training provides all users as well as network support specialists with the knowledge to effectively operate and support the new WLAN system