Sercomm AP51GA Wireless Internet Access Server Applicance User Manual AP51GA

Sercomm Corporation Wireless Internet Access Server Applicance AP51GA

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i TABLE OF CONTENTS CHAPTER 1 INTRODUCTION..............................................................................................1 Features of your Wireless Access Point...........................................................................1 Package Contents...............................................................................................................3 Physical Details..................................................................................................................3 CHAPTER 2 INSTALLATION...............................................................................................5 Requirements.....................................................................................................................5 Procedure ...........................................................................................................................5 CHAPTER 3 ACCESS POINT SETUP...................................................................................7 Overview ............................................................................................................................7 Setup using the Windows Utility ......................................................................................7 Setup using a Web Browser..............................................................................................9 System Screen ..................................................................................................................12 Access Control Screen.....................................................................................................14 2.4GHz Wireless Screens ................................................................................................17 Basic Settings Screen.......................................................................................................17 Security Settings ..............................................................................................................19 Advanced Settings ...........................................................................................................25 CHAPTER 4 PC AND SERVER CONFIGURATION........................................................27 Overview ..........................................................................................................................27 Using WEP .......................................................................................................................27 Using WPA-PSK............................................................................ 錯誤! 尚未定義書籤。 802.1x Mode - Overview ............................................................... 錯誤! 尚未定義書籤。 802.1x Server Setup (Windows 2000 Server) ................................................................29 802.1x Client Setup on Windows XP..............................................................................39 CHAPTER 5 OPERATION AND STATUS .........................................................................46 Operation .........................................................................................................................46 Status Screen....................................................................................................................46 CHAPTER 6 OTHER SETTINGS & FEATURES..............................................................51 Overview ..........................................................................................................................51 Admin Login Screen........................................................................................................51 Config File........................................................................................................................53 Firmware Upgrade..........................................................................................................54 APPENDIX A SPECIFICATIONS........................................................................................55 Wireless Access Point......................................................................................................55 APPENDIX B TROUBLESHOOTING.................................................................................59 Overview ..........................................................................................................................59 General Problems ............................................................................................................59 APPENDIX C WINDOWS TCP/IP.......................................................................................61 Overview ..........................................................................................................................61 Checking TCP/IP Settings - Windows 9x/ME: .............................................................61 Checking TCP/IP Settings - Windows NT4.0................................................................63 Checking TCP/IP Settings - Windows 2000 ..................................................................66 Checking TCP/IP Settings - Windows XP.....................................................................68 Wireless LANs .................................................................................................................69

ii P/N: 9560N90001 Copyright  2004. All Rights Reserved. Document Version: 1.1 All trademarks and trade names are the properties of their respective owners.

1 Chapter 1 Introduction This Chapter provides an overview of the Wireless Access Point's features and capabilities. Congratulations on the purchase of your new Wireless Access Point. The Wireless Access Point links your 802.11g or 802.11b Wireless Stations to your wired LAN. The Wireless stations and devices on the wired LAN are then on the same network, and can communicate with each other without regard for whether they are connected to the network via a Wireless or wired connection. Figure 1: Wireless Access Point The auto-sensing capability of the Wireless Access Point allows packet transmission up to 54Mbps for maximum throughput, or automatic speed reduction to lower speeds when the environment does not permit maximum throughput. Features of your Wireless Access Point The Wireless Access Point incorporates many advanced features, carefully designed to provide sophisticated functions while being easy to use. • Standards Compliant. The Wireless Router complies with the IEEE802.11g (DSSS) specifications for Wireless LANs. • Supports both 802.11b and 802.11g Wireless Stations. The 802.11g standard provides for backward compatibility with the 802.11b standard, so both 802.11b and 802.11g Wireless stations can be used simultaneously. • 802.1x Support. Support for 802.1x mode is included, providing for the industrial-strength wireless security of 802.1x authentication and authorization. • Radius Client Support. The Wireless Access Point can login to your existing Radius Server (as a Radius client). 1

Wireless Access Point User Guide 2 • Dynamic WEP key Support. In 802.1x mode, either fixed or Dynamic WEP keys can be used. • Upgradeable Firmware. Firmware is stored in a flash memory and can be upgraded easily, using only your Web Browser. • WEP support. Support for WEP (Wired Equivalent Privacy) is included. Both 64 Bit and 128 Bit keys are supported. • WPA support. Support for WPA is included. WPA is more secure than WEP, and should be used if possible. • Access Control. The Access Control feature can ensure that only trusted Wireless Stations can use the Wireless Access Point to gain access to your LAN. • Simple Configuration. If the default settings are unsuitable, they can be changed quickly and easily. • DHCP Client Support. Dynamic Host Configuration Protocol provides a dynamic IP address to PCs and other devices upon request. The Wireless Access Point can act as a DHCP Client, and obtain an IP address and related information from your existing DHPC Server. • NetBIOS & WINS Support. Support for both NetBIOS broadcast and WINS (Win-dows Internet Naming Service) allows the Wireless Access Point to easily fit into your existing Windows network. • Password - protected Configuration. Optional password protection is provided to prevent unauthorized users from modifying the configuration data and settings.

Introduction 3 Package Contents The following items should be included: • Wireless Access Point • Power Adapter • Quick Start Guide • CD-ROM containing the on-line manual If any of the above items are damaged or missing, please contact your dealer immediately. Physical Details Front Panel LEDs Figure 2: Front Panel Status On - Error condition. Off - Normal operation. Blinking - During start up, and when the Firmware is being upgraded. Power On - Normal operation. Off - No power LAN On - The LAN (Ethernet) port is active. Off - No active connection on the LAN (Ethernet) port. Flashing - Data is being transmitted or received via the corresponding LAN (Ethernet) port. Wireless LAN On - Idle Off - Error- Wireless connection is not available. Flashing - Data is being transmitted or received via the Wireless access point. Data includes "network traffic" as well as user data.

Wireless Access Point User Guide 4 Rear Panel Figure 3 Rear Panel Antenna One antenna (aerial) is supplied. Best results are usually obtained with the antenna in a vertical position. Console port DB9 female RS232 port. Reset Button This button has two (2) functions: • Reboot. When pressed and released, the Wireless Access Point will reboot (restart). • Reset to Factory Defaults. This button can also be used to clear ALL data and restore ALL settings to the factory default values. To Clear All Data and restore the factory default values: 1. Power Off the Access Point 2. Hold the Reset Button down while you Power On the Access Point. 3. Continue holding the Reset Button until the Status (Red) LED blinks TWICE. 4. Release the Reset Button. The factory default configuration has now been restored, and the Access Point is ready for use. Ethernet Use a standard LAN cable (RJ45 connectors) to connect this port to a 10BaseT or 100BaseT hub on your LAN. Power port Connect the supplied power adapter here.

5 Chapter 2 Installation This Chapter covers the physical installation of the Wireless Access Point. Requirements Requirements: • TCP/IP network • Ethernet cable with RJ-45 connectors • Installed Wireless network adapter for each PC that will be wirelessly connected to the network Procedure 1. Select a suitable location for the installation of your Wireless Access Point. To maximize reliability and performance, follow these guidelines: • Use an elevated location, such as wall mounted or on the top of a cubicle. • Place the Wireless Access Point near the center of your wireless coverage area. • If possible, ensure there are no thick walls or metal shielding between the Wireless Access Point and Wireless stations. Under ideal conditions, the Wireless Access Point has a range of around 150 meters (450 feet). The range is reduced, and transmission speed is lower, if there are any obstructions between Wireless devices. Figure 4: Installation Diagram 2

Wireless Access Point User Guide 6 2. Use a standard LAN cable to connect the “Ethernet” port on the Wireless Access Point to a 10/100BaseT hub on your LAN. 3. Connect the supplied power adapter to the Wireless Access Point and a convenient power outlet, and power up. 4. Check the LEDs: • The Status LED should flash, then turn OFF. • The Power, WLAN, and LAN LED should be ON. For more information, refer to Front Panel LEDs in Chapter 1.

7 Chapter 3 Access Point Setup This Chapter provides details of the Setup process for Basic Operation of your Wireless Access Point. Overview This chapter describes the setup procedure to make the Wireless Access Point a valid device on your LAN, and to function as an Access Point for your Wireless Stations. Wireless Stations may also require configuration. For details, see Chapter 4 - Wireless Station Configuration. The Wireless Access Point can be configured using either the supplied Windows utility or your Web Browser Setup using the Windows Utility A simple Windows setup utility is supplied on the CD-ROM. This utility can be used to assign a suitable IP address to the Wireless Access Point. Using this utility is recommended, because it can locate the Wireless Access Point even if it has an invalid IP address. Installation 1. Insert the supplied CD-ROM in your drive. 2. Run the SETUP.exe program in the root folder. 3. Follow the prompts to complete the installation. Main Screen • Start the program by using the icon created by the setup program. • When run, the program searches the network for all active Wireless Access Points, then lists them on screen, as shown by the example below. Figure 5: Management utility Screen 3

Wireless Access Point User Guide 8 Wireless Access Points On the center of the screen is a list of all Wireless Access Points found on the network. For each device, the following data is shown: • Server Name. The Server Name is shown on a sticker on the base of the device. • IP. The IP address for the Wireless Access Point. • MAC. The hardware or physical address of the Wireless Access Point. • SSID. The SSID setting for the Wireless Access Point. (The SSID is case sensitive.) • Channel. The current channel used by the Wireless Access Point. • Version. The current version number for the Wireless Access Point. • Description. Any extra information for the Wireless Access Point. Note: If the desired Wireless Access Point is not listed, check that the device is installed and ON, then Refresh the list. Buttons • Refresh. Click this button to update the Wireless Access Point device listing after chang-ing the name or IP Address. • Web Management. You can use this button to connect the Wireless Access Point to do some setup using web browser. • Set IP Address. Click this button if you want to change the IP Address of the device. • Exit. Exit the Management utility program by clicking this button. Setup Procedure 1. Select the desired Wireless Access Point. 2. Click the Set IP Address button. 3. If prompted, enter the user name and password. The default values are admin for the User Name, and a blank Password 4. Ensure the IP address, Network Mask, and Gateway are correct for your LAN. Save any changes. 5. Click the Web Management button to connect to the selected Wireless Access Point using your Web Browser. If prompted, enter the User Name and Password again. 6. Configure the following screens, using the on-line help if necessary. The following section also provides more details about each of these screens. • Wireless • Security • Password 7. Setup is now complete.

Setup 9 Setup using a Web Browser Your Browser must support JavaScript. The configuration program has been tested on the following browsers: • Netscape V4.08 or later • Internet Explorer V4 or later Setup Procedure Before commencing, install the Wireless Access Point in your LAN, as described previously. 1. Check the Wireless Access Point to determine its Default Name. This is shown on a label on the base or rear, and is in the following format: SCxxxxxx Where xxxxxx is a set of 6 Hex characters ( 0 ~ 9, and A ~ F ). 2. Use a PC which is already connected to your LAN, either by a wired connection or another Access Point. • Until the Wireless Access Point is configured, establishing a Wireless connection to it may be not possible. • If your LAN contains a Router or Routers, ensure the PC used for configuration is on the same LAN segment as the Wireless Access Point. 3. Start your Web browser. 4. In the Address box, enter "HTTP://" and the Default Name of the Wireless Access Point e.g. HTTP://SC2D631A 5. You should then see a login prompt, which will ask for a User Name and Password. Enter admin for the User Name, and password for the Password. These are the default values. The password (but not the user name) can and should be changed. Always enter the current password, as set on the Admin Login screen. Figure 6: Password Dialog 6. You will then see the Status screen, which displays the current settings and status. No data input is possible on this screen.

Wireless Access Point User Guide 10 7. From the menu, select and configure the following options, as described in the following sections: • System • Access Control • 2.4GHz Wireless • Basic • Security • Advanced • Management 8. Setup of the Wireless Access Point is now complete. Wireless stations must now be set to match the Wireless Access Point. See Chapter 4 for details. If you can't connect: It is likely that your PC’s IP address is incompatible with the Wireless Access Point’s IP address. This can happen if your LAN does not have a DHCP Server. The default IP address of the Wireless Access Point is 192.168.0.100, with a Network Mask of 255.255.255.0. If your PC’s IP address is not compatible with this, you must change your PC’s IP address to an unused value in the range 192.168.0.1 ~ 192.168.0.254, with a Net-work Mask of 255.255.255.0. See Appendix C - Windows TCP/IP for details for this procedure.

Setup 11 Status Screen When you first connect, you will see the Status screen. This displays the current settings and status of the Wireless Access Point. No data can be input on this screen. Figure 7: Status Screen For further details of this screen, refer to Status Screen in Chapter 5.

Wireless Access Point User Guide 12 System Screen Click System on the menu to view a screen like the following. Figure 8: System Screen Data - System Screen Identification Access Point Name Enter a suitable name for this Access Point. Description If desired, you can enter a description for the Access Point. Country Domain Select the country or domain matching your current location. MAC Address The read-only field shows the current MAC Address. IP Address DHCP Client Select this option if you have a DHCP Server on your LAN, and you wish the Access Point to obtain an IP address automatically. Fixed If selected, the following data must be entered. • IP Address - The IP Address of this device. Enter an unused IP address from the address range on your LAN. • Subnet Mask - The Network Mask associated with the IP Address above. Enter the value used by other devices on your LAN. • Gateway - The IP Address of your Gateway or Router. Enter the value used by other devices on your LAN. • DNS - Enter the DNS (Domain Name Server) used by PCs on your LAN.

Setup 13 WINS Enable WINS If your LAN has a WINS server, you can enable this to have this AP register with the WINS server. WINS Server Name/IP Ad-dress Enter the name or IP address of your WINS server. Telnet Enable Telnet Management If desired, you can enable this option. If enabled, you will able to connect to this AP using a Telnet client. You will have to provide the same login data (user name, password) as for a HTTP (Web) connec-tion.

Wireless Access Point User Guide 14 Access Control Screen This feature can be used to block access to your LAN by unknown or untrusted wireless sta-tions. Click Access Control on the menu to view a screen like the following. Figure 9: Access Control Screen Data - Access Control Screen Enable Use this checkbox to Enable or Disable this feature as desired. Warning ! Ensure you own PC is in the "Trusted Wireless Stations" list before enabling this feature.. Trusted Stations This table lists any Wireless Stations you have designated as "Trusted". If you have not added any stations, this table will be empty. For each Wireless station, the following data is displayed: • MAC Address - the MAC or physical address of each Wire-less station. • Connected - this indicates whether or not the Wireless station is currently associates with this Access Point. Buttons Modify List To change the list of Trusted Stations (Add, Edit, or Delete a Wireless Station or Stations), click this button. Read from File To upload a list of Trusted Stations from a file on your PC, click this button. Write to File To download the current list of Trusted Stations from the Access Point to a file on your PC, click this button.

Setup 15 Trusted Wireless Stations This feature can be used to block access to your LAN by unknown or untrusted wireless sta-tions., use the Modify List button on the Access Control screen. You will see a screen like the sample below. Figure 10: Trusted Wireless Stations Data - Trusted Wireless Stations Trusted Wireless Stations This lists any Wireless Stations which you have designated as “Trusted”. Other Wireless Stations This list any Wireless Stations detected by the Access Point, which you have not designated as "Trusted". Address Used when adding or editing a Trusted Station, to display or enter the address (MAC or physical address) of the Wireless station. Buttons << Used to add Wireless stations to the Trusted Wireless Station list. Select the desired Station or Stations in the Other Wireless Stations list, then click this button. >> Used to delete Wireless stations from the Trusted Wireless Station list. Select the desired Station or Stations in the Trusted Wireless Sta-tions list, then click this button. Edit Used to edit an existing Wireless Station: 1. Select a station in the Trusted Wireless Stations list 2. Click the Edit button. The data from the selected station is copied to the Address field, and the Add button changes to Up-date. 3. Edit the address as required. 4. Click the Update button to save your changes, or Clear if you do not wish to save.

Wireless Access Point User Guide 16 Add To add a Trusted Station which is not in the "Other Wireless Sta-tions" list, enter the required data and click this button. Clear Clear the Address field. If editing, this also cancels the edit and changes the Update button back to Add.

Setup 17 2.4GHz Wireless Screens There are 3 configuration screens available: • Basic • Security • Advanced Basic Settings Screen The settings on this screen must match the settings used by Wireless Stations. Click Basic on the menu to view a screen like the following. Figure 11: Basic Settings Screen Data - Basic Settings Screen Operation Wireless Mode Select the desired option: • Disable - select this if for some reason you do not this AP to transmit or receive at all. • 802.11b and 802.11g - this is the default, and will allow connec-tions by both 802.11b and 802.1g wireless stations. • 802.11b - if selected, only 802.11b connections are allowed. 802.11g wireless stations will only be able to connect if they are fully backward-compatible with the 802.11b standard. • 802.11g - only 802.11g connections are allowed. If you only have 802.11g, selecting this option may provide a performance im-provement over using the default setting. • Super 802.11g (108Mbps) - select this only if all wireless stations support this mode. • Dynamic Super 802.11g (108Mbps) - select this only if all wireless stations support this mode. • Static Super 802.11g (108Mbps) - select this only if all wireless stations support this mode.

Wireless Access Point User Guide 18 Operating Mode Select the desired mode: • Wireless Access Point - operate as a normal Access Point • Client Access Point - act as a client for another Access Point. If selected, you must provide the address (MAC address) of the other Access Point (Remote AP). • Repeater Access Point - act as a repeater for another Access Point. If selected, you must provide the address (MAC address) of the other Access Point (Remote AP). Remote AP MAC Address This is not required unless the Operating Mode is "Client Access Point" or "Repeater Access Point". In either of these modes, you must provide the MAC address of the other AP in this field. You can either enter the MAC address directly, or, if the other AP is on-line, you can click the "Select AP" button and select from a list of available APs. Channel No If "Automatic" is selected, the Wireless Access Point will self-select a Wireless Channel. If you experience interference (shown by lost connections and/or slow data transfers) you may need to experiment with different channels to see which Channel is the best. Current Channel No. This displays the current channel used by the Access Point. SSID Enter the desired SSID. Wireless Stations must use the same SSID. Note: The SSID is case sensitive. Broadcast SSID If Enabled, the SSID will be broadcast to all Wireless Stations. Stations which have no SSID (or a "null" value) can then adopt the correct SSID for connections to this Access Point.

Setup 19 Security Settings The Security screen is accessed from the main menu, and it provides 5 options as below: • None • WEP • WPA-PSK • WPA-802.1x • 802.1X Security Settings - None If "None" is selected, no security is used, and there are no settings to configure. Security Settings - WEP Selecting the WEP option will result in a screen like the following. Figure 12: WEP Settings Data - WEP Screen WEP Data Encryption Select the desired option: • 64 Bit Encryption - Keys are 10 Hex (5 ASCII) characters. • 128 Bit Encryption - Keys are 26 Hex (13 ASCII) charac-ters.

Wireless Access Point User Guide 20 Authentication Normally, you can leave this at “Automatic”, so that Wireless Stations can use either method ("Open System" or "Shared Key".). If you wish to use a particular method, select the appropriate value - "Open System" or "Shared Key". All Wireless stations must then be set to use the same method. Key Input Select "Hex" or "ASCII" depending on your input method. (All keys are converted to Hex, ASCII input is only for conven-ience.) Key 1.. Key 4 Enter the key value you wish to use. Other stations must have the same key. Passphrase Use this to generate a key or keys, instead of entering them directly. Enter a word or group of printable characters in the Passphrase box and click the "Generate Key" button to auto-matically configure the WEP Key(s). If encryption strength is set to 64 bit, then each of the four key fields will be populated with key values. If encryption strength is set to 128 bit, then only the selected WEP key field will be given a key value. Security Settings - WPA-PSK Selecting the WPA-PSK option will result in a screen like the following. Figure 13: WPA-PSK Settings Data - WPA-PSK Screen WPA-PSK Network Key Enter the key value. Data is encrypted using this key. Other Wireless Stations must use the same key. WPA Encryption Select the desired option. Other Wireless Stations must use the same method.

Setup 21 Pairwise Key Update This refers to the key used for point-to-point transmissions. Enable this if you want the keys to be updated regularly. Key Lifetime This field determines how often Pairwise keys are dynamically updated. Enter the desired value. Group Key Update This refers to the key used for broadcast transmissions. Enable this if you want the keys to be updated regularly. Key Lifetime This field determines how often the Group key is dynamically updated. Enter the desired value. Group key update when any membership terminated If enabled, the Group key will be updated whenever any member leaves the group or disassociates from the Access Point. Security Settings - WPA-802.1x This version of WPA requires that you have a Radius Server on your LAN. Selecting the WPA-802.1x option will result in a screen like the following. Figure 14: WPA-802.1x Settings Data - WPA-802.1x Screen WPA-802.1x Radius Server Enter the name or IP address of the Radius Server on your network. Radius Port Enter the port number used for connections to the Radius Server.

Wireless Access Point User Guide 22 Client Login Name This read-only field displays the current login name, which is the same as the name of the Access Point. The Radius Server must be configured to accept this login. Shared Key This is used for the Client Login on the Radius Server. Enter the key value to match the Radius Server. WPA Encryption Select the desired option. Other Wireless Stations must use the same method. • TKIP - Unicast (point-to-point) transmissions are en-crypted using TKIP, and multicast (broadcast) transmissions are not encrypted. • TKIP + 64 bit WEP - Unicast (point-to-point) transmis-sions are encrypted using TKIP, and multicast (broadcast) transmissions are encrypted using 64 bit WEP. • TKIP + 128 bit WEP - - Unicast (point-to-point) transmis-sions are encrypted using TKIP, and multicast (broadcast) transmissions are encrypted using 128 bit WEP. Pairwise Key Up-date This refers to the key used for point-to-point transmissions. Enable this if you want the keys to be updated regularly. Key Lifetime This field determines how often Pairwise keys are dynamically updated. Enter the desired value. Group Key Update This refers to the key used for broadcast transmissions. Enable this if you want the keys to be updated regularly. Key Lifetime This field determines how often the Group key is dynamically updated. Enter the desired value. Group key update when any member-ship terminated If enabled, the Group key will be updated whenever any member leaves the group or disassociates from the Access Point. Radius Accounting Enable this if you want this Access Point to send accounting data to the Radius Server. If enabled, the port used by your Radius Server must be entered in the Radius Accounting Port" field. Update Report every ... If Radius accounting is enabled, you can enable this and enter the desired update interval. This Access Point will then send updates according to the specified time period.

Setup 23 Security Settings - 802.1x 802.1x can only be used if you have a Radius Server on your LAN. Selecting the 802.1x option will result in a screen like the following. Figure 15: 802.1x Settings Data - 802.1x Screen 802.1x Radius Server Address Enter the name or IP address of the Radius Server on your network. Radius Port Enter the port number used for connections to the Radius Server. Client Login Name This read-only field displays the current login name, which is the same as the name of the Access Point. The Radius Server must be configured to accept this login. Shared Key This is used for the Client Login on the Radius Server. Enter the key value to match the Radius Server. WEP Key Size Select the desired option: • 64 Bit Encryption - Keys are 10 Hex (5 ASCII) charac-ters. • 128 Bit Encryption - Keys are 26 Hex (13 ASCII) characters. Key Exchange Enable this if you want the keys to be updated regularly. Key Lifetime This field determines how often keys are dynamically updated. Enter the desired value.

Wireless Access Point User Guide 24 Radius Accounting Enable this if you want this Access Point to send accounting data to the Radius Server. If enabled, the port used by your Radius Server must be entered in the Radius Accounting Port" field. Update Report every ... If Radius accounting is enabled, you can enable this and enter the desired update interval. This Access Point will then send updates according to the specified time period.

Setup 25 Advanced Settings Click the Advanced link on the menu will result in a screen like the following. Figure 16: Advanced Settings Data - Advanced Settings Screen Basic Rate Basic Rate Selection The Basic Rate is used for broadcasting. It does not determine the data transmission rate, which is determined by the "Mode" setting on the Basic screen. Select the desired option: • Auto-negotiate - This is the default, and will normally give the best results. • Fixed Rate - If you don't use to use "Auto-negotiate", you must also select the desired speeds. Wireless Separation If enabled, then each Wireless station using the Access Point is invisible to other Wireless stations. In most business situations, this setting should be Disabled. Parameters Disassociated Timeout This determines how quickly a Wireless Station will be consid-ered "Disassociated" with this AP, when no traffic is received. Enter the desired time period. Fragmentation Enter the preferred setting between 256 and 2346. Beacon Interval Enter the preferred setting between 0 and 3000.

Wireless Access Point User Guide 26 RTS/CTS Threshold Enter the preferred setting between 256 and 2346. Output Power Level Select the desired power output. Higher levels will give a greater range, but are also more likely to cause interference with other devices. Preamble Type Select the desired preamble type. Antenna Selection If your Access Point has only 1 antenna, there is only 1 option available. If your Access Point has 2 antennae, select the option which gives the best results in your location. 802.11b Protection Type Select the desired option. Short Slot Time Enable or disable this setting as required. Protection Mode Normally, this should be left at "Auto". Protection Rate Select the desired option.

27 Chapter 4 PC and Server Configuration This Chapter details the PC Configuration required for each PC on the local LAN. Overview All Wireless Stations need to have settings which match the Wireless Access Point. These settings depend on the mode in which the Access Point is being used. • If using WEP or WPA-PSK, it is only necessary to ensure that each Wireless station's settings match those of the Wireless Access Point, as described below. • For WPA-802.1x and 802.1x modes, configuration is much more complex. The Radius Server must be configured correctly, and setup of each Wireless station is also more com-plex. Using WEP For each of the following items, each Wireless Station must have the same settings as the Wireless Access Point. Mode On each PC, the mode must be set to Infrastructure. SSID (ESSID) This must match the value used on the Wireless Access Point. The default value is default Note! The SSID is case sensitive. Wireless Security • Each Wireless station must be set to use WEP data encryption. • The Key size (64 bit or 128 bit) must be set to match the Access Point. • The keys values on the PC must match the key values on the Access Point. Note: On some systems, the "64 bit" key is shown as "40 bit" and "128 bit" is shown as "104 bit". This difference arises because the key input by the user is 24 bits less than the key size used for encryption. 4

Wireless Access Point User Guide 28 Using WPA-802.1x This is the most secure and most complex system. 802.1x mode provides greater security and centralized management, but it is more complex to configure. Wireless Station Configuration For each of the following items, each Wireless Station must have the same settings as the Wireless Access Point. Mode On each PC, the mode must be set to Infrastructure. SSID (ESSID) This must match the value used on the Wireless Access Point. The default value is default Note! The SSID is case sensitive. 802.1x Authentication Each client must obtain a Certificate which is used for authentication for the Radius Server. 802.1x Encryption Typically, EAP-TLS is used. This is a dynamic key system, so keys do NOT have to be entered on each Wireless station. Radius Server Configuration If using WPA-802.1x mode, the Radius Server on your network must be configured as follow: • It must provide and accept Certificates for user authentication. • There must be a Client Login for the Wireless Access Point itself. • The Wireless Access Point will use its Default Name as its Client Login name. • The Shared Key, set on the Security Screen of the Access Point, must match the Shared Secret value on the Radius Server. • Encryption settings must be correct.

PC and Server Configuration 29 802.1x Server Setup (Windows 2000 Server) This section describes using Microsoft Internet Authentication Server as the Radius Server, since it is the most common Radius Server available that supports the EAP-TLS authentication method. The following services on the Windows 2000 Domain Controller (PDC) are also required: • dhcpd • dns • rras • webserver (IIS) • Radius Server (Internet Authentication Service) • Certificate Authority Windows 2000 Domain Controller Setup 1. Run dcpromo.exe from the command prompt. 2. Follow all of the default prompts, ensure that DNS is installed and enabled during installa-tion. Services Installation 1. Select the Control Panel - Add/Remove Programs. 2. Click Add/Remove Windows Components from the left side. 3. Ensure that the following components are activated (selected): • Certificate Services. After enabling this, you will see a warning that the computer cannot be renamed and joined after installing certificate services. Select Yes to select certificate services and continue • World Wide Web Server. Select World Wide Web Server on the Internet Information Services (IIS) component. • From the Networking Services category, select Dynamic Host Configuration Protocol (DHCP), and Internet Authentication Service (DNS should already be selected and in-stalled).

Wireless Access Point User Guide 30 Figure 17: Components Screen 4. Click Next. 5. Select the Enterprise root CA, and click Next. Figure 18: Certification Screen 6. Enter the information for the Certificate Authority, and click Next.

PC and Server Configuration 31 Figure 19: CA Screen 7. Click Next if you don't want to change the CA's configuration data. 8. Installation will warn you that Internet Information Services are running, and must be stopped before continuing. Click Ok, then Finish. DHCP server configuration 1. Click on the Start - Programs - Administrative Tools - DHCP 2. Right-click on the server entry as shown, and select New Scope. Figure 20: DHCP Screen 3. Click Next when the New Scope Wizard Begins. 4. Enter the name and description for the scope, click Next. 5. Define the IP address range. Change the subnet mask if necessary. Click Next.

Wireless Access Point User Guide 32 Figure 21:IP Address Screen 6. Add exclusions in the address fields if required. If no exclusions are required, leave it blank. Click Next. 7. Change the Lease Duration time if preferred. Click Next. 8. Select Yes, I want to configure these options now, and click Next. 9. Enter the router address for the current subnet. The router address may be left blank if there is no router. Click Next. 10. For the Parent domain, enter the domain you specified for the domain controller setup, and enter the server's address for the IP address. Click Next. Figure 22: DNS Screen 11. If you don't want a WINS server, just click Next. 12. Select Yes, I want to activate this scope now. Click Next, then Finish. 13. Right-click on the server, and select Authorize. It may take a few minutes to complete.

PC and Server Configuration 33 Certificate Authority Setup 1. Select Start - Programs - Administrative Tools - Certification Authority. 2. Right-click Policy Settings, and select New - Certificate to Issue. Figure 23: Certificate Authority Screen 3. Select Authenticated Session and Smartcard Logon (select more than one by holding down the Ctrl key). Click OK. Figure 24: Template Screen 4. Select Start - Programs - Administrative Tools - Active Directory Users and Computers. 5. Right-click on your active directory domain, and select Properties.

Wireless Access Point User Guide 34 Figure 25: Active Directory Screen 6. Select the Group Policy tab, choose Default Domain Policy then click Edit. Figure 26: Group Policy Tab 7. Select Computer Configuration - Windows Settings - Security Settings - Public Key Poli-cies, right-click Automatic Certificate Request Settings - New - Automatic Certificate Request.

PC and Server Configuration 35 Figure 27: Group Policy Screen 8. When the Certificate Request Wizard appears, click Next. 9. Select Computer, then click Next. Figure 28: Certificate Template Screen 10. Ensure that your certificate authority is checked, then click Next. 11. Review the policy change information and click Finish. 12. Click Start - Run, type cmd and press enter. Enter secedit /refreshpolicy machine_policy This command may take a few minutes to take effect.

Wireless Access Point User Guide 36 Internet Authentication Service (Radius) Setup 1. Select Start - Programs - Administrative Tools - Internet Authentication Service 2. Right-click on Clients, and select New Client. Figure 29: Service Screen 3. Enter a name for the access point, click Next. 4. Enter the address or name of the Wireless Access Point, and set the shared secret, as entered on the Security Settings of the Wireless Access Point. 5. Click Finish. 6. Right-click on Remote Access Policies, select New Remote Access Policy. 7. Assuming you are using EAP-TLS, name the policy eap-tls, and click Next. 8. Click Add... If you don't want to set any restrictions and a condition is required, select Day-And-Time-Restrictions, and click Add... Figure 30: Attribute Screen 9. Click Permitted, then OK. Select Next. 10. Select Grant remote access permission. Click Next.

Wireless Access Point User Guide 38 Remote Access Login for Users 1. Select Start - Programs - Administrative Tools- Active Directory Users and Computers. 2. Double click on the user who you want to enable. 3. Select the Dial-in tab, and enable Allow access. Click OK. Figure 32: Dial-in Screen

PC and Server Configuration 39 802.1x Client Setup on Windows XP Windows XP ships with a complete 802.1x client implementation. If using Windows 2000, you can install SP3 (Service Pack 3) to gain the same functionality. If you don't have either of these systems, you must use the 802.1x client software provided with your wireless adapter. Refer to your vendor's documentation for setup instructions. The following instructions assume that: • You are using Windows XP • You are connecting to a Windows 2000 server for authentication. • You already have a login (User name and password) on the Windows 2000 server. Client Certificate Setup 1. Connect to a network which doesn't require port authentication. 2. Start your Web Browser. In the Address box, enter the IP address of the Windows 2000 Server, followed by /certsrv e.g http://192.168.0.2/certsrv 3. You will be prompted for a user name and password. Enter the User name and Password assigned to you by your network administrator, and click OK. Figure 33: Connect Screen 4. On the first screen (below), select Request a certificate, click Next.

Wireless Access Point User Guide 40 Figure 34: Wireless CA Screen 5. Select User certificate request and select User Certificate, the click Next. Figure 35: Request Type Screen 6. Click Submit.

PC and Server Configuration 41 Figure 36: Identifying Information Screen 7. A message will be displayed, then the certificate will be returned to you. Click Install this certificate. Figure 37:Certificate Issued Screen 8. . You will receive a confirmation message. Click Yes.

Wireless Access Point User Guide 42 Figure 38: Root Certificate Screen 9. Certificate setup is now complete. 802.1x Authentication Setup 1. Open the properties for the wireless connection, by selecting Start - Control Panel - Network Connections. 2. Right Click on the Wireless Network Connection, and select Properties. 3. Select the Authentication Tab, and ensure that Enable network access control using IEEE 802.1X is selected, and Smart Card or other Certificate is selected from the EAP type. Figure 39: Authentication Tab Encryption Settings The Encryption settings must match the APs (Access Points) on the Wireless network you wish to join. • Windows XP will detect any available Wireless networks, and allow you to configure each network independently.

PC and Server Configuration 43 • Your network administrator can advise you of the correct settings for each network. 802.1x networks typically use EAP-TLS. This is a dynamic key system, so there is no need to en-ter key values. Enabling Encryption To enable encryption for a wireless network, follow this procedure: 1. Click on the Wireless Networks tab. Figure 40: Wireless Networks Screen 2. Select the wireless network from the Available Networks list, and click Configure. 3. Select and enter the correct values, as advised by your Network Administrator. For example, to use EAP-TLS, you would enable Data encryption, and click the checkbox for the setting The key is provided for me automatically, as shown below.

Wireless Access Point User Guide 44 Figure 41: Properties Screen Setup for Windows XP and 802.1x client is now complete.

PC and Server Configuration 45 Using 802.1x Mode (without WPA) This is very similar to using WPA-802.1x. The only difference is that on your client, you must NOT enable the setting The key is provided for me automatically. Instead, you must enter the WEP key manually, ensuring it matches the WEP key used on the Access Point. Figure 42: Properties Screen Note: On some systems, the "64 bit" WEP key is shown as "40 bit" and the "128 bit" WEP key is shown as "104 bit". This difference arises because the key input by the user is 24 bits less than the key size used for encryption.

46 Chapter 5 Operation and Status This Chapter details the operation of the Wireless Access Point and the status screens. Operation Once both the Wireless Access Point and the PCs are configured, operation is automatic. However, you may need to perform the following operations on a regular basis. • If using the Access Control feature, update the Trusted PC database as required. (See Access Control in Chapter 3 for details.) • If using 802.1x mode, update the User Login data on the Windows 2000 Server, and configure the client PCs, as required. Status Screen Use the Status link on the main menu to view this screen. Figure 43: Status Screen 5

Operation and Status 47 Data - Status Screen Access Point Access Point Name The current name will be displayed. MAC Address The MAC (physical) address of the Wireless Access Point. Domain This is the region for which this Wireless Access Point is licensed for use. Firmware Version The version of the firmware currently installed. TCP/IP IP Address The IP Address of the Wireless Access Point. Subnet Mask The Network Mask (Subnet Mask) for the IP Address above. Gateway Enter the Gateway for the LAN segment to which the Wireless Access Point is attached (the same value as the PCs on that LAN segment). DHCP Client This indicates whether the current IP address was obtained from a DHCP Server on your network. It will display "Enabled" or "Disabled". 2.4GHz Wireless SSID The current SSID. Channel/Frequency The Channel currently in use is displayed. Wireless Mode The current wireless mode is displayed. Operating Mode The current operational mode is displayed. Authentication This displays the current Authentication setting. Encryption The current Encryption setting is displayed. Access Control This indicates whether the Access Control feature is Enabled or Disabled.. Buttons Log Click this to open a sub-window where you can view the activity log. Stations Click this to open a sub-window where you can view the list of all current Wireless Stations using the Access Point. 2.4GHz Statistics Click this to open a sub-window where you can view Statistics on data transmitted or received by the Access Point.

Wireless Access Point User Guide 48 Activity Log This screen is displayed when the Log button on the Status screen is clicked. Figure 44: Activity Log Screen Data - Activity Log Data Current Time The system date and time is displayed. Log The Log shows details of the existing connections to the Wireless Access Point. Buttons Refresh Update the data on screen. Save to file Save the log to a file on your pc. Clear Log This will delete all data currently in the Log. This will make it easier to read new messages.

Operation and Status 49 Station List This screen is displayed when the Stations button on the Status screen is clicked. Figure 45 Station List Screen Data - Station List Screen Station List MAC Address The MAC (physical) address of each Wireless Station is displayed. Mode The mode of each Wireless Station. Status The current status of each Wireless Station is displayed. Refresh Button Update the data on screen.

Wireless Access Point User Guide 50 Statistics Screen This screen is displayed when the 2.4GHzStatistics button on the Status screen is clicked. It shows details of the traffic flowing through the Wireless Access Point. Figure 46: Statistics Screen Data - Statistics Screen System Up Time System Up Time This indicates how long the system has been running since the last restart or reboot. 2.4GHz Wireless Authentication Deauthentication Association Disassociation Reassociation Wireless MSDU Data Number of Data transmitted to and received from Wireless Stations. Multicast Packets Number of Broadcast packets transmitted to and received from Wireless Stations, using Multicast transmission. Management Control

51 Chapter 6 Other Settings & Features This Chapter explains when and how to use the Wireless Access Point's "Management" Features. Overview This Chapter covers the following features, available on the Wireless Access Point’s Manage-ment menu. • Admin Login • Config File • Upgrade Firmware Admin Login Screen The Admin Login screen allows you to assign a password to the Wireless Access Point. This password limits access to the configuration interface. The default password is password. It is recommended that this be changed, using this screen. Figure 47: Admin Login Screen Data - Admin Login Screen User Name Enter the user name here New Password Enter the new password here Repeat New Password Re-enter the new password in this field. You will be prompted for the password when you connect, as shown below. 6

Wireless Access Point User Guide 52 Figure 48: Password Dialog • Enter admin for the User Name. • Enter the Wireless Access Point’s password, as set on the Admin Login screen above.

Other Settings & Features 53 Config File This screen allows you to Backup (download) the configuration file, and to restore (upload) a previously-saved configuration file. You can also set the Wireless Access Point back to its factory default settings. To reach this screen, select Config File in the Management section of the menu. Figure 49: Config File Screen Data - Config File Screen Backup Save a copy of cur-rent settings Click the Backup button to download the current settings to a file on your PC. Restore Restore saved settings from a file If you have a previously-saved configuration file, you can use this to restore those settings by uploading the file. 1. Click the Browse button and navigate to the location of the configuration file. 2. Select the upgrade file. Its name will appear in the File field. 3. Click the Restore button to commence the upload. 4. The Wireless Access Point will need to restart, and will be unavailable during the restart. All exiting connections will be broken. Defaults Revert to factory default settings Use this to set the Wireless Access Point back to its factory default settings. • Click Set to Defaults to start the procedure. • The Wireless Access Point will need to restart, and will be unavailable during the restart. All exiting connections will be broken.

Wireless Access Point User Guide 54 Firmware Upgrade The firmware (software) in the Wireless Access Point can be upgraded using your Web Browser. You must first download the upgrade file, and then select Upgrade Firmware in the Manage-ment section of the menu. You will see a screen like the following. Figure 50: Firmware Upgrade Screen To perform the Firmware Upgrade: 1. Click the Browse button and navigate to the location of the upgrade file. 2. Select the upgrade file. Its name will appear in the Upgrade File field. 3. Click the Upgrade button to commence the firmware upgrade. The Wireless Access Point is unavailable during the upgrade process, and must restart when the upgrade is completed. Any connections to or through the Wireless Access Point will be lost.

55 Appendix A Specifications Wireless Access Point Hardware Specifications CPU AR2312 Radio-on-Chip AR2112 DRAM 8 Mbytes (Expand to 64MB) Flash ROM 2 Mbytes (Expand to 8MB) LAN port 1 x Auto-MDIX RJ 45 for 10/100Mbps Ethernet Embedded Atheros solution Network Standard IEEE 802.11b (Wi-Fi™) and IEEE 802.11g compliance OFDM; 802.11b: CCK (11 Mbps, 5.5 Mbps), DQPSK (2 Mbps), DBPSK (1 Mbps) Operating Frequencies 2.412.2.497 GHz 11G Operating Channels 802.11g: 13 for North America, 13 for Europe (ETSI), 14 for Japan 802.11b: 11 for North America, 14 for Japan, 13 for Europe (ETSI) Operating temperature 0~55℃ Storage temperature -20℃~70℃ Power Adapter DC 12V/1.2A Dimensions 141mm (W) x 100mm (D) x 27mm (H) Wireless Specifications Receive Sensitivity at 11Mbps min. -85dBm Receive Sensitivity at 5.5Mbps min. -89dBm Receive Sensitivity at 2Mbps min. -90dBm Receive Sensitivity at 1Mbps min. -93dBm Maximum Receive Level min. -5dBm Transmit Power 18 dBm Modulation Direct Sequence Spread Spectrum BPSK / QPSK / CCK Throughput Up to 19 Mbps Operating Range Indoors A

Wireless Access Point User Guide 56 • 30 Meters (100ft.) @ 11Mbps • 50 Meters (165ft.) @ 5.5Mbps • 70 Meters (230ft.) @ 2Mbps • 9 1Meters (300ft.) @ 1Mbps Outdoors • 152 Meters (500ft.) @ 11Mbps • 270 Meters (885ft.) @ 5.5Mbps • 396 Meters (1300ft.) @ 2 Mbps • 457 Meters (1500ft.) @ 1 Mbps Software Specifications Feature Details Wireless • Access point support • Roaming supported • IEEE 802.11g/11b compliance • Supper G (up to 108Mbps) • Auto Sensing Open System / Share Key authentication • Wireless Channels Support • Automatic Wireless Channel Selection • Antenna selection • Tx Power Adjustment • Country Selection • Preamble Type: long or short support • RTS Threshold Adjustment • Fragmentation Threshold Adjustment • Beacon Interval Adjustment • SSID assignment Operation Mode • Common AP • Repeater • Client AP Security • Open, shared, WPA, and WPA-PSK authentication • 802.1x support • EAP-TLS, EAP-TTLS, PEAP • Block inter-wireless station communication • Block SSID broadcast Management • Web based configuration • RADIUS Accounting • RADIUS-On feature • RADIUS Accounting update • CLI • Message Log

Appendix A - Specifications 57 • Access Control list file support • Configuration file Backup/Restore • Statistics support • Device discovery program • Windows Utility Other Features • DHCP client • WINS client Firmware Upgrade HTTP, FTP network protocol download

Wireless Access Point User Guide 58 FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protec-tion against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communica-tions. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. To assure continued compliance, any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. (Example - use only shielded interface cables when connecting to computer or peripheral devices). FCC Radiation Exposure Statement This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

59 Appendix B Troubleshooting Overview This chapter covers some common problems that may be encountered while using the Wireless Access Point and some possible solutions to them. If you follow the suggested steps and the Wireless Access Point still does not function properly, contact your dealer for further advice. General Problems Problem 1: Can't connect to the Wireless Access Point to configure it. Solution 1: Check the following: • The Wireless Access Point is properly installed, LAN connections are OK, and it is powered ON. Check the LEDs for port status. • Ensure that your PC and the Wireless Access Point are on the same network segment. (If you don't have a router, this must be the case.) • If your PC is set to "Obtain an IP Address automatically" (DHCP client), restart it. • You can use the following method to determine the IP address of the Wireless Access Point, and then try to connect using the IP address, in-stead of the name. To Find the Access Point's IP Address 1. Open a MS-DOS Prompt or Command Prompt Window. 2. Use the Ping command to “ping” the Wireless Access Point. Enter ping followed by the Default Name of the Wireless Access Point. e.g. ping SC003318 3. Check the output of the ping command to determine the IP address of the Wireless Access Point, as shown below. Figure 51: Ping If your PC uses a Fixed (Static) IP address, ensure that it is using an IP Address which is compatible with the address of the Wireless Access Point. (The default IP Address and Mask of the Wireless Access Point is 192.168.0.100 and 255.255.255.0.) On Windows PCs, you can use Control Panel-Network to check the Properties for the TCP/IP protocol. B

Wireless Access Point User Guide 60 Problem 2: My PC can't connect to the LAN via the Wireless Access Point. Solution 2 Check the following: • The SSID and WEP settings on the PC match the settings on the Wire-less Access Point. • On the PC, the wireless mode is set to "Infrastructure" • If using the Access Control feature, the PC's name and address is in the Trusted Stations list. • If using 802.1x mode, ensure the PC's 802.1x software is configured correctly. See Chapter 4 for details of setup for the Windows XP 802.1x client. If using a different client, refer to the vendor's documentation.

61 Appendix C Windows TCP/IP Overview Normally, no changes need to be made. • By default, the Wireless Access Point will act as a DHCP client, automatically obtaining a suitable IP Address (and related information) from your DHCP Server. • If using Fixed (specified) IP addresses on your LAN (instead of a DHCP Server), there is not need to change the TCP/IP of each PC. Just configure the Wireless Access Point to match your existing LAN. The following sections provide details about checking the TCP/IP settings for various types of Windows, should that be necessary. Checking TCP/IP Settings - Windows 9x/ME: 1. Select Control Panel - Network. You should see a screen like the following: Figure 52: Network Configuration 2. Select the TCP/IP protocol for your network card. 3. Click on the Properties button. You should then see a screen like the following. C

Wireless Access Point User Guide 62 Figure 53: IP Address (Win 95) Ensure your TCP/IP settings are correct, as follows: Using DHCP To use DHCP, select the radio button Obtain an IP Address automatically. This is the default Windows settings. Restart your PC to ensure it obtains an IP Address from the Wireless Access Point. Using "Specify an IP Address" • If your PC is already configured, do NOT change the settings on the IP Address tab shown in Figure 53 above. • On the Gateway tab, enter the Wireless Access Point's IP address in the New Gateway field and click Add. Your LAN administrator can advise you of the IP Address they assigned to the Wireless Access Point. Figure 54: Gateway Tab • On the DNS Configuration tab, ensure Enable DNS is selected. If the DNS Server Search Order list is empty, enter the DNS address provided by your ISP in the fields beside the Add button, then click Add.

Appendix C - Windows TCP/IP 63 Figure 55: DNS Tab (Win 95/98) Checking TCP/IP Settings - Windows NT4.0 1. Select Control Panel - Network, and, on the Protocols tab, select the TCP/IP protocol, as shown below. Figure 56: Windows NT4.0 - TCP/IP 2. Click the Properties button to see a screen like the one below.

Wireless Access Point User Guide 64 Figure 57: Windows NT4.0 - IP Address 3. Select the network card for your LAN. 4. Select the appropriate radio button - Obtain an IP address from a DHCP Server or Specify an IP Address, as explained below. Obtain an IP address from a DHCP Server This is the default Windows setting. Using this method is recommended. By default, the Wireless Access Point will act as a DHCP Server. Restart your PC to ensure it obtains an IP Address from the Wireless Access Point. Specify an IP Address If your PC is already configured, check with your network administrator before making the following changes. 1. The Default Gateway must be set to the IP address of the Wireless Access Point. To set this: • Click the Advanced button on the screen above. • On the following screen, click the Add button in the Gateways panel, and enter the Wireless Access Point's IP address, as shown in Figure 58 below. • If necessary, use the Up button to make the Wireless Access Point the first entry in the Gateways list.

Appendix C - Windows TCP/IP 65 Figure 58 - Windows NT4.0 - Add Gateway 2. The DNS should be set to the address provided by your ISP, as follows: • Click the DNS tab. • On the DNS screen, shown below, click the Add button (under DNS Service Search Order), and enter the DNS provided by your ISP. Figure 59: Windows NT4.0 - DNS

Wireless Access Point User Guide 66 Checking TCP/IP Settings - Windows 2000 1. Select Control Panel - Network and Dial-up Connection. 2. Right click the Local Area Connection icon and select Properties. You should see a screen like the following: Figure 60: Network Configuration (Win 2000) 3. Select the TCP/IP protocol for your network card. 4. Click on the Properties button. You should then see a screen like the following. Figure 61: TCP/IP Properties (Win 2000)

Appendix C - Windows TCP/IP 67 5. Ensure your TCP/IP settings are correct: Using DHCP To use DHCP, select the radio button Obtain an IP Address automatically. This is the default Windows settings. Restart your PC to ensure it obtains an IP Address from the Wireless Access Point. Using a fixed IP Address ("Use the following IP Address") If your PC is already configured, check your ISP's documentation before making the following changes. • Enter the Wireless Access Point's IP address in the Default gateway field and click OK. • If the DNS Server fields are empty, select Use the following DNS server addresses, and enter the DNS address or addresses provided by your ISP, then click OK.

Wireless Access Point User Guide 68 Checking TCP/IP Settings - Windows XP 1. Select Control Panel - Network Connection. 2. Right click the Local Area Connection and choose Properties. You should see a screen like the following: Figure 62: Network Configuration (Windows XP) 3. Select the TCP/IP protocol for your network card. 4. Click on the Properties button. You should then see a screen like the following. Figure 63: TCP/IP Properties (Windows XP)

Appendix C - Windows TCP/IP 69 5. Ensure your TCP/IP settings are correct. Using DHCP To use DHCP, select the radio button Obtain an IP Address automatically. This is the default Windows settings. Restart your PC to ensure it obtains an IP Address from the Wireless Access Point. Using a fixed IP Address ("Use the following IP Address") • If your PC is already configured, do NOT change the settings on the screen shown in Figure 63 above, unless advised to do so by your network administrator. • You can enter the Wireless Access Point's IP address in the Default gateway field and click OK. Your LAN administrator can advise you of the IP Address they assigned to the Wire-less Access Point. • If the DNS Server fields are empty, select Use the following DNS server addresses, and enter the DNS address or addresses provided by your ISP, then click OK. Wireless LANs Wireless networks have their own terms and jargon. It is necessary to understand many of these terms in order to configure and operate a Wireless LAN. Modes Wireless LANs can work in either of two (2) modes: • Ad-hoc • Infrastructure Ad-hoc Mode Ad-hoc mode does not require an Access Point or a wired (Ethernet) LAN. Wireless Sta-tions (e.g. notebook PCs with wireless cards) communicate directly with each other. Infrastructure Mode In Infrastructure Mode, one or more Access Points are used to connect Wireless Stations (e.g. Notebook PCs with wireless cards) to a wired (Ethernet) LAN. The Wireless Stations can then access all LAN resources. Access Points can only function in "Infrastructure" mode, and can communicate only with Wireless Stations which are set to "Infrastructure" mode. SSID/ESSID BSS/SSID A group of Wireless Stations and a single Access Point, all using the same ID (SSID), form a Basic Service Set (BSS).

Wireless Access Point User Guide 70 Using the same SSID is essential. Devices with different SSIDs are unable to communi-cate with each other. However, some Access Points allow connections from Wireless Stations which have their SSID set to “any” or whose SSID is blank ( null ). ESS/ESSID A group of Wireless Stations, and multiple Access Points, all using the same ID (ESSID), form an Extended Service Set (ESS). Different Access Points within an ESS can use different Channels. To reduce interference, it is recommended that adjacent Access Points SHOULD use different channels. As Wireless Stations are physically moved through the area covered by an ESS, they will automatically change to the Access Point which has the least interference or best perform-ance. This capability is called Roaming. (Access Points do not have or require Roaming capabilities.) Channels The Wireless Channel sets the radio frequency used for communication. • Access Points use a fixed Channel. You can select the Channel used. This allows you to choose a Channel which provides the least interference and best performance. For 802.11g, 13 channels are available in the USA and Canada., but 11channels are available in North America if using 802.11b. • If using multiple Access Points, it is better if adjacent Access Points use different Channels to reduce interference. The recommended Channel spacing between adjacent Access Points is 5 Channels (e.g. use Channels 1 and 6, or 6 and 11). • In "Infrastructure" mode, Wireless Stations normally scan all Channels, looking for an Access Point. If more than one Access Point can be used, the one with the strongest signal is used. (This can only happen within an ESS.) • If using "Ad-hoc" mode (no Access Point), all Wireless stations should be set to use the same Channel. However, most Wireless stations will still scan all Channels to see if there is an existing "Ad-hoc" group they can join. WEP WEP (Wired Equivalent Privacy) is a standard for encrypting data before it is transmitted. This is desirable because it is impossible to prevent snoopers from receiving any data which is transmitted by your Wireless Stations. But if the data is encrypted, then it is meaningless unless the receiver can decrypt it. If WEP is used, the Wireless Stations and the Wireless Access Point must have the same settings. WPA-PSK Like WEP, data is encrypted before transmission. WPA is more secure than WEP, and should be used if possible. The PSK (Pre-shared Key) must be entered on each Wireless station. The 256Bit encryption key is derived from the PSK, and changes frequently.

Appendix C - Windows TCP/IP 71 WPA-802.1x WPA-802.1x - This version of WPA requires a Radius Server on your LAN to provide the client authentication according to the 802.1x standard. Data transmissions are encrypted using the WPA standard. If this option is selected: • This Access Point must have a "client login" on the Radius Server. • Each user must have a "user login" on the Radius Server. • Each user's wireless client must support 802.1x and provide the login data when required. • All data transmission is encrypted using the WPA standard. Keys are automatically gener-ated, so no key input is required. 802.1x • This uses the 802.1x standard for client authentication, and WEP for data encryption. If possible, you should use WPA-802.1x instead, because WPA encryption is much stronger than WEP encryption. • If this option is selected: • This Access Point must have a "client login" on the Radius Server. • Each user must have a "user login" on the Radius Server. • Each user's wireless client must support 802.1x and provide the login data when required. • All data transmission is encrypted using the WEP standard. You only have to select the WEP key size; the WEP key is automatically generated.

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