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http://www.axis.com 802.11b Access Point and Device Point Technical training
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Agenda Marketing information System Overview WLAN Technology Security 802.11b Access point 802.11b Device Point Hands on Training
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Marketing information (not yet)
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System Overview
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The 802.11b Access Point is connected on the main network. The Camera is connected to the 802.11b Device Point.
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System Overview Access Point Wired Network Device Point Internet Device Point
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*Today only one device can be connected to the Device Point through the network interface but in next SW-release will contain multiple device support. This is not a big issue in our customers cases. Our customers will probably only connect one camera to each Device Point. Future overview
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Access Point Wired Network Device Point Wired Network Internet Multi-Client Support (will be available) Device Point
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How to connect the 802.11b Access Point Connect the 802.11b Access Point on the main network. Configure the 802.11b Access Point from a computer on the main network (Smart AP utility) Configure the network parameters and the Security- settings.
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How to connect the Camera to the 802.11b Device Point Use a cross over connected UTP Ethernet cable to connect the Camera Server to the Device Point. The 802.11b Device Point is a bridge (converter) between cabled Ethernet and wireless Ethernet (IEEE 802.11b). Today only one camera can be connected to each Device Point.
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Wireless LAN Technologies Overview
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Channel ─ The medium use for passing data in specific frequency, such as 2.4GHz. BSS (Basic Service Set): The conceptual area within which members of a basic service set may communicate Infrastructure mode ESS (Extended Service Set): A set of one or more interconnected BSSs and integrated WLANs. Infrastructure mode IBSS (Independent BSS) ─ Ad-Hoc mode Authentication Association Wired Equivalent Privacy (WEP) Wireless Distribution System (WDS) The whole interconnected Wireless LAN, including the different cells, their respective Access Points and the Distribution System Network Definitions
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Infrastructure-BSS BSS/ESS uses infrastructure mode. Wired Network Access Point Client Basic Service Set – single cell
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Infrastructure-ESS Wired Network Access Point Client Access Point Client
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Ad-Hoc (IBSS) IBSS uses Ad- Hoc mode
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How to Join the Infrastructure Network Wired Network Access Point Client ID : SanDisk1 Channel 7 Open system w/o WEP Searching Auth. Assoc. Connected ΘΞΠ
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Synchronization Searching target wireless networks Active Scanning (STA probes a frame) Passive Scanning (STA waits for a Beacon) – XI-815 The Authentication Process To get authenticated from the target wireless network The Association Process A state where a client is allowed to pass data through an AP Additional Authentication(802.1x) Exchange the ID & Password with RADIUS server How to Join Infrastructure Network
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Roaming
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Inter-cell Roaming
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The Unlicensed Radio Frequency Spectrum 5.15-5.35 5.725-5.825GHz IEEE 802.11a HiperLAN/2
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Physical Layer 802.11a802.11g802.11b Standard Approved September 1999 Available Bandwidth 300MHz 83.5MHz Unlicensed Frequencies of Operation 5.15-5.35GHz 5.725-5.825GHz 2.4-2.4835GHz Number of Non- overlapping Channels 4(Indoor) 4(Indoor/Outdoor) 3(Indoor/Outdoor) Data Rate Per Channel 6,9,12,18,24,36,48,54 Mbps 1,2,5.5,11 6,9,12,18,22,24,33,36,48,54Mbps 1,2,5.5,11Mbps ModulationOFDM DSSS,OFDM PBCC(O),CCK-OFDM(O) DSSS CCK
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Channel Plan – 802.11/11b/11g
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2.412 2.437 2.462 Non-overlapping channels Channel Spacing (5MHz)
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1 11 6 6 6 1 1 1 1 1 1 6 6 6 1 1 3 3 3 2 2 2 1 1 1 1 1 1 3 2 3 3 2 2 Channel Plan : {1,6,11} or {…} Hidden notes interfere Co-Channel Interference
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Sources of interference in 2.4GHz band Main Source: consumer microwave ovens – Spread Spectrum Receiver design allows narrowband interference – Rate reduction allows even more robust operation Other radios – RFID tag ( radio frequency ID tag ) – Generally, various systems, such as FHSS and DSSS in the 2.4GHz and will interfere with each other All FHSS systems will interfere with each other to some extent Bluetooth, IEEE802.11 and Home RF are currently imcompatible and will interfere IEEE802.11 and Home RF interoperability is currently being evaluated by Home RF working group Robust for Interference
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Security
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Why Security is so important? Privacy Preventing Unauthorized Access Information security (read only/fully authorized) Preventing Attacks Virus Personal Security Policy Networking Security Policy Tunnel Firewall
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How to protect your network? Use virus protection software Use firewall Set up personal and group firewall. Do not open unknown email attachments Do not run programs of unknown origin Disable hidden filename extensions Keep all applications (including your operating system) patched Turn off your computer or disconnect from the network when not in use Disable Java, JavaScript, and ActiveX if possible Disable scripting features in email programs Make regular backups of critical data Make a boot disk in case your computer is damaged or compromised
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SSID (Wireless network name) Authentication Open system Share Key MAC address Control WEP-keys Security in the 802.11b
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However… Wireless Network Vulnerability 2.4GHz radio signal and unlicensed band Broadcasting all the time WEP Encryption has been broken by certain means, it is not secure any more. Authentication process is not strong enough since WEP encryption has been defeated.
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Recommendation 1 More secure with WEP on than with WEP off. The wireless link between the AP and client is only one small part of a secure network. Large companies should implement end-to-end security VPN, RADIUS, IEEE 802.1x Home and small business can take several measures to improve security until a solution is available
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Recommendation 2 Turn WEP on and manage your WEP key by changing the default key Changing the WEP key, daily to weekly. Password protect drives and folders. Change the default SSID (Wireless Network Name). Use MAC address control. Use a VPN system. Though it would require a VPN server, the VPN client is already included in many operating systems such as Windows 98 Second Edition, Windows 2000 and Windows XP.
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802.11b Access Point
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Solution Atmel (Z-Com) Power Supply - 5V LAN Port One 10Base RJ-45 LAN port – a cross Ethernet cable is included Antenna Design One Dipole and one PIFA Hardware Overview
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PWRYellowPower enabled WLANYellow Flashing: Wireless LAN traffic activity LANYellow Off: No Ethernet traffic activity Flashing: Wired LAN traffic activity On: Connect to the Ethernet. Led Status Off: No Wireless LAN activity
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Feature Highlights AP Operation Modes AP Repeater AP with Repeating Configuration Management Web-based and Windows-based configuration SNMP MIBII support
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AP with Repeating Wired Network AP with Repeating Wired Network The AP is capable of performing AP and Wireless Bridge function at the same time. Same channel is required for all bridges.
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AP / Repeater only AP with Repeating Wired Network Repeater Bridge While using a wireless bridge in this configuration has the advantage of extending the link, it has the disadvantage of decreased throughput due to having to repeat all frames using the same half duplex radio. Same channel is required for all bridges. Bridge (repeater) Bridge (repeater)
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Standard: Wi-Fi Compliant (not certified) Wi-Fi Compliant (not certified) Security WEP encryption up to 128-bits MAC Filtering (up to 128 wireless nodes) Hidden Access Point Feature Highlights (Cont.)
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What security means does 802.11b Access Point provide? (I) WEP 40bit encryption Alphanumeric: 5 characters Hexadecimal: 10 hexadecimal digits 128bit encryption Alphanumeric: 13 characters Hexadecimal: 26 hexadecimal digits
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What security means does 802.11b Access Point provide? (II) MAC Access Control Enable MAC access control Click “Add” to enter MAC addresses Click “Apply” Only the client with the MAC address that is listed on the table is allowed to associate with the Access Point At most 128 clients
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What security means does 802.11b Access Point provide? (III) Enable Security and select “Hide Access Point” to make AP invisible for AP browsing engaged by stations. If stations get the correct SSID, stations still can connect to AP by assigning SSID manually.
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802.11b Access Point Management/Configuration
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How to configure the 802.11b Access Point Via Web-based utility Via Windows-based utility
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Windows-Based Utility Password: default By installing and using Wireless Access Point Utility in Any PC on the local network, you may then access and configure the Wireless Station Adapter Anywhere on the local network.
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Windows-Based Utility - Info Shows the Current Information of the Wireless Station Adapter, including ESSID, AP name, Channel, Mode, SNMP, DHCP Client, IP address, subnetmask and default gateway.
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Windows-Based Utility – Parameter Setup Configurable parameters includes ESSID, AP name, Channel, Mode, SNMP, DHCP Client, IP address subnetmask, default gateway and password.
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Windows-Based Utility – Security To prevent unauthorized wireless stations from accessing data transmitted over the network, the Wireless LAN Micro Access Point offers security Options such as WEP, MAC Access Control as well as Hide AP Access.
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Windows-Based Utility – WEP For 40-bit WEP ASCII: 5 characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9” (e.g. MyKey) Hex: 10 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (e.g. 11AA22BB33) Passphrase: click Generate to generate WEP keys automatically. For 128-bit WEP ASCII: 13 characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9” (e.g. MyKey12345678) Hex: 26 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (e.g. 00112233445566778899AABBCC) Passphrase : click Generate to generate WEP keys automatically.
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Windows-Based Utility – MAC Access Control With the Access Control Table enabled, you can authorize wireless units to access the Access Point by identifying the MAC address of the wireless devices that are allowed access to transmit data.
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Windows-Based Utility – Hide AP Access With hide AP access enabled by checking “Hide AP Access” check box, wireless stations with ESSID “ ANY ” will not browser and associate to the Wireless Micro Access Point.
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Windows-Based Utility – About Shows the Current Utility and Firmware of the Wireless Access point
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Windows-Based Utility – About With the Firmware Upgrade Utility, you will be able to upgrade any of the 802.11b Access Point on the network. Password : default
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WEB-Based Utility – Login
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WEB-Based Utility – Info
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WEB-Based Utility – Configuration
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WEB-Based Utility – WEP
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WEB-Based Utility – Hide AP and MAC Access Control
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WEB-Based Utility – TCP/IP
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802.11b Access Point FAQs
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How to reset 802.11b Access Point to the default? Software Press the “Default” button of the utility. Hardware Press the “Default” button by the side of the LAN port on hardware
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How to upgrade firmware Firmware upgrade utility Add *.bin file Press “Upgrade” button.
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How many Wireless Bridges can the 802.11b Access Point grant the connection with? Software limit At most 256 clients Suggestion No more than 4 clients Cells around each repeater will overlap by a minimum of 50%
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How to use the “AP with Repeating Mode” From the “Mode” item on utility, select “AP+Repeater”. The same channel is required to all Access Points.
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How does SNMP work in 802.11b Access Point? Enable SNMP. Install a SNMP management tool to compile the 802.11 MIB files and use the tool or other tools to monitor the SNMP agent in WL-013.
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802.11b Device Point
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802.11b Device point Hardware Overview Solution Atmel (Z-Com) Power Supply - 5V LAN Port One 10Base RJ45 LAN port, a cross Ethernet cable is included Antenna Design One Dipole and one PIFA Output Power 18dBm typical
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Operation Mode 802.11b Access Point Operation Mode Perform as wireless client station Configuration Management Web-based and Windows-based configuration (support 98\ME\NT\2K\XP. 802.11b Access Point Feature Highlights Type of Approval Europe: EC-Type Approval Certificate ETS 300 328 Test Report North America: FCC, IC Japan: MKK/TELEC/JATE Taiwan: DGT/BSMI
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PWRYellowPower enabled WLANYellow Off: No Wireless LAN traffic activity Flashing: Wireless LAN traffic activity On: Associated to the Wireless AP. LANYellow Off: No Ethernet traffic activity Flashing: Wired LAN traffic activity On: Connect to the Ethernet. Hardware Overview (Cont.)
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Security WEP encryption up to 128-bits MAC Filtering (up to 128 wireless nodes) Support of 802.1x (not yet) Feature Highlights (Cont.)
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What security means does the 802.11b Device Point provide? WEP 64bit encryption Alphanumeric: 5 characters Hexadecimal: 10 hexadecimal digits 128bit encryption Alphanumeric: 13 characters Hexadecimal: 26 hexadecimal digits Passphrase ASCII string 802.1x later
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Act just like Wireless Station Access Point Wired Network Device Point Internet
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Act just like Wireless Station Access Point Wired Network Device Point Multi-Client Support (will be available) Device Point Internet
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How to configure the 802.11b Device Point? Via Web-based utility Via Windows-based utility
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Windows-Based Utility Password: default By installing and using Station Adapter Utility in Any PC on the local network, you may then access and configure the 802.11b Device Point Anywhere on the local network.
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Windows-Based Utility - Info Shows the Current Information of the Device point, including ESSID, AP name, TX rate, IP address, subnetmask and default gateway.
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Windows-Based Utility – Parameter Setup Configurable parameters includes ESSID, AP name, TX rate, IP address subnetmask, default gateway and password.
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Windows-Based Utility – Security To prevent unauthorized wireless stations from accessing data transmitted over the network, the 802.11b Device Point offers WEP security options.
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Windows-Based Utility – Security For 40-bit WEP ASCII: 5 characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9” (e.g. MyKey) Hex: 10 hexadecimal digits in the range of “A- F”, “a-f” and “0-9” (e.g. 11AA22BB33) Passphrase: click Generate to generate WEP keys automatically. For 128-bit WEP ASCII: 13 characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9” (e.g. MyKey12345678) Hex: 26 hexadecimal digits in the range of “A- F”, “a-f” and “0-9” (e.g. 00112233445566778899AABBCC) Passphrase : click Generate to generate WEP keys automatically.
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Windows-Based Utility – About Shows the Current Utility and Firmware of the 802.11b Device Point
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Firmware Upgrade Utility Allow you to upgrade the firmware for the Device point. Password: default
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WEB-Based Utility – Info
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802.11b Device Point FAQs
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How to reset the 802.11b Device Point to the default? Software Press the “Default” button of the utility. Hardware Press the “Default” button by the side of the LAN port on hardware
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How to upgrade firmware Firmware upgrade utility Add *.bin file Press “Upgrade” button.
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Does the 802.11b Device Point support Wireless Workgroup Bridge? No, not today: But it will support Wireless Ethernet Bridge (same as Wireless Workgroup Bridge) on the later version. The number of Ethernet clients will be limited to under 8.
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Demonstration/ Hands On Training
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Questions
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