Topcom 4001G Computer Drive User Manual
Contents
1. I Fast Roaming at j E Tun off RF Apply 20 Parameter Description Wireless Mode Select Your Country Region Code B G Protection Tx Rate Tx BURST 802 11 B G mix If you have a mix of 802 11b and 802 119 wireless stations in your network it is recommended to set the adaptor to this mode This mode is also the default setting 802 11 B only This adaptor can be compatible with both 802 11g and 802 11b wireless stations If there are only 802 11b wireless stations in the network you can set the adaptor to this mode 802 11 G only This adaptor can be compatible with both 802 11g and 802 11b wireless stations If there are only 802 11g wireless stations in the network you can set the adaptor to this mode The available channel differs from different countries For example USA FCC is channel 1 11 Europe ETSI is channel 1 13 The operating frequency channel will be restricted to the country user located before importing If you are in different country you have to adjust the channel setting to comply the regulation of the country If you have a mix of 802 11b and 802 11g wireless stations in the network it is recommended to enable the protection mechanism This mechanism can decrease the rate of data collision between 802 11b and 802 11g wireless stations When the protection mode is enabled the throughput of the adaptor will be a little lower due to many of frame traffic should be transmitt2. the authentication server or certification server to authenticate client users Parameter Description Encryption Mode WPA Pre Shared Key WEP Key Key1 Key4 None Disable the encryption mode WEP Enable the WEP Data Encryption When the item is selected you have to continue setting the WEP Encryption keys TKIP TKIP Temporal Key Integrity Protocol changes the temporal key every 10 000 packets a packet is a kind of message transmitted over a network This ensures much greater security than the standard WEP security AES AES has been developed to ensure the highest degree of security and authenticity for digital information and it is the most advanced solution defined by IEEE 802 11i for the security in the wireless network Note All devices in the network should use the same encryption method to ensure the communication The WPA PSK key can be from 8 to 64 characters and can be letters or numbers This same key must be used on all of the wireless stations in the network The WEP keys are used to encrypt data transmitted in the wireless network There are two types of key length 64 bit and 128 bit Select the default encryption key from Key 1 to Key 4 by selected the radio button Fill the text box by following the rules below 64 bit Input 10 digit Hex values in the A F a f and 0 9 range or 5 digit ASCII characters including a z and O 9 as the encryptio
3. be recovered Even if one or more bits in the chip are damaged during transmission statistical techniques embedded in the radio can recover the original data without the need for retransmission To an unintended receiver DSSS appears as low power wideband noise and is rejected ignored by most narrowband receivers 26 13 What is Spread Spectrum Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable secure mission critical communication systems It is designed to trade off bandwidth efficiency for reliability integrity and security In other words more bandwidth is consumed than in the case of narrowband transmission but the trade off produces a signal that is in effect louder and thus easier to detect provided that the receiver knows the parameters of the spread spectrum signal being broadcast If a receiver is not tuned to the right frequency a spread spectrum signal looks like background noise There are two main alternatives Direct Sequence Spread Spectrum DSSS and Frequency Hopping Spread Spectrum FHSS 27
4. server presents a certificate to the client After validating the server s certificate the client presents a client certificate to the server for validation MD5 Challenge MD5 Challenge is the easiest EAP Type It requires the wireless station to enter a set of user name and password as the identity to RADIUS Server There are Disabled Reauthentication Roaming SameSsid and Always selections for you to choose whether to recovery the session in different status Enter the name as the identity for the server Enter the password as the identity for the server A client certificate is required for TLS and is optional for TTLS and PEAP This forces a client certificate to be selected from the appropriate Windows Certificate Store and made available to the RADIUS server for certification Parameter Description Tunneled Authentication Protocol Identity Password When the authentication type is PEAP or TTLS select a protocol to be used to build the encrypted tunnel This is the protected user EAP Identity used for authentication The identity specified may contain up to 63 ASCII characters is case sensitive and takes the form of a Network Access Identifier consisting of lt name of the user gt lt user s home realm gt The user s home realm is optional and indicates the routing domain The password used for authentication It may contain up to 63 ASCII characters and is
5. set the adaptor to this mode 802 11 B G mix If you have a mix of 802 11b and 802 11g wireless stations in your network it is recommended to set the adaptor to this mode This mode is also the default setting 802 11 G only This adaptor can be compatible with both 802 11g and 802 11b wireless stations If there are only 802 119 wireless stations in the network you can set the adaptor to this mode The preamble defines the length of the CRC block for communication among wireless devices This option is only active in the Ad Hoc network There are two modes including Auto and Long Preamble If Auto mode is selected the adaptor will auto switch the preamble mode depending on the wireless devices the adaptor is connecting to 11 Parameter Description RTS Threshold Minimum packet size required for an RTS Request To Sena For packets smaller than this threshold an RTS is not sent and the packet is transmitted directly to the wireless network Select a setting within a range of O to 2347 bytes Minor change is recommended Fragment Threshold The value defines the maximum size of packets any packet size larger than the value will be fragmented If you have decreased this value and experience high packet error rates you can increase it again but it will likely decrease overall network performance Select a setting within a range of 256 to 2346 bytes Minor change is recommended Channel This setting is only
6. to Add Delete Edit Activate a profile Topcom Wireless LAN Utility Profile Link Status Site Survey Statistics Advanced About Profile List Profile Name SSID Channel Authentication Encryption Network Ty wy PROF default Infrastructure Delete Edit Activate Parameter Description Profiles List The profiles list display all the profiles and the relative settings of the profiles including Profile Name SSID Channel etc Y This sign indicates the activated profile is been connecting M This sign indicates the activated profile is not been connecting Add Delete Edit Button Click these buttons to add delete edit the selected profiles Activate Button Click Activate to connect to the selected profile When a profile is activated the adaptor will be initially connected to the profile 3 2 1 Configure the Profile Add Profile Configuration Authentication and Security Profile Name PSM e Network Type Preamble l RTS Threshold 3 2 1 1 Configuration PROF1 SSID Ad hoc v TX Power Auto y Ad hoc wirel Auto lt mode EAN y j y 29 Channel Fragment Threshold 256 y 2346 1 Parameter Description Profile Name Define a recognizable profile name for you to identify the different networks SSID The SSID up to 32 printable ASCII characters is the unique name identified in a WLAN The ID prevents the unintentional merging of two co located WLANs
7. CCK 11b Data Rate 54 48 36 24 18 12 11 9 6 5 5 2 1Mbps auto fallback Securities 64 128 bit WEP Data Encryption WPA TKIP with IEEE 802 1x WPA2 AES with IEEE 802 1x Note WPA2 is only enabled in Windows 2000 XP 2003 Server Antenna Internal Antenna Drivers Windows 2000 XP 2003 Server LEDs Link Activity Transmit Power 17dBm 2dBm Receive Sensitivity 7OdBm 54Mbps 83 5dBm 11Mbps Dimension 9 H x 27 W x 87 D mm Temperature 32 122 F 0 50 C Humidity 10 95 NonCondensing Certification FCC CE 1 3 Package Contents Before you begin the installation please check the items of your package The package should include the following items e One USB Adaptor e One CD Driver Utility User s Manual 2 Installation Procedure Before you proceed with the installation please notice following descriptions Note1 Please do not install the adaptor into your computer before installing the software program from the CD Note2 The following installation was operated under Windows XP Procedures are similar for Windows 2000 2003 Server Note3 If you have installed the Turbo Wireless LAN USB Adaptor driver utility before please uninstall the old version first A Insert the Installation CD to your CD ROM Drive Choose Install Software Topcom Skyr cer USB 4001g Skyr cer USB 4001g Install Software aan an Click here for FREE Antivirus etus Be Quick Installation Guide ra English In
8. TOPCOM gt SK a Skyr cer USB 4001g Full User Guide CONTENTS I T Features cancun casa tation ate bestest tiie a eet A AA EA ATE ATEA ARRS assess 2 EAE o ESETA TO IE rcs ests cays E A A A 2 MDF Package C ntase na E a Nas 3 Dal Site SUrye ynnah an widen E a E a Ae 8 Dede A IS 9 3 21 Configure the Profiles aria ad a Wa aa eee 10 3 211 Configuration AA TS 10 3 2 1 2 Authentication and Security cc issevsacisseaciivsavessiseyescea eavcevasedvenceaveracdesnscacsntboredeede 12 LS 802 13 Sets CO A Ae 16 3 2 4 A Setting CA Server A ve eee A ee eae ee 17 3 3 ALAM Sl nonsen unenian sn en apes ane nel neat 18 3A SAS e il te eng hie 20 o E ats 20 O vacua ceases lt a aco cae sel E ders aeaugeeevnve ged ca uae ae E E 23 BF Turbo Modest dt dl diia 23 1 Introduction Thank you for purchasing the 802 11g Wireless LAN USB Adapter This USB adapter is designed to comply with IEEE 802 11g Wireless LAN standard and easy to carry with the Mini size lt is suitable for any Laptop or Desktop computers This adaptor supports higher data throughput than the IEEE 802 11g standard up to 54Mbps It supports specific ways to increase the data transfer rate at a time compress the data and decrease the waiting time to send the next data to the Routers or APs This feature is called Turbo Mode When the adaptor is connecting to the Routers or APs with the proprietary feature the wireless network will be more effective For WLAN security issues
9. You may specify a SSID for the adaptor and then only the device with the same SSID can interconnect to the adaptor If you want to add the network nearby to the profile list pull down the menu all the networks will be listed for you to add one of them to the profile list Parameter Description PSM Power Saving Mode Network Type TX Power Ad Hoc Wireless Mode Preamble The power saving function is only available when the network type is in Infrastructure CAM Constantly Awake Mode The adaptor will always set in active mode PSM Power Saving Mode Enable the adaptor in the power saving mode when it is idle Infrastructure This operation mode requires the presence of an 802 11 Access Point All communication is done via the Access Point or Router Ad Hoc Select this mode if you want to connect to another wireless stations in the Wireless LAN network without through an Access Point or Router If you want to lower the transmit power of the adaptor for saving the power of the system you can select the lower percentages from the list The lower power will cause the lower signal strength and the coverage range When the adaptor is set in Ad Hoc Peer to Peer Mode you can designate the wireless connection mode for the Ad Hoc network 802 11 B only This adaptor can be compatible with both 802 119 and 802 11b wireless stations If there are only 802 11b wireless stations in the network you can
10. available for Ad Hoc mode Select the number of the radio channel used for the networking The channel setting should be the same with the network you are connecting to Add Profile Configuration Authentication and Security Authentication Type Encryption WPA Preshared Key PT Show Passward 3 2 1 2 Authentication and Security Parameter Description Authentication Type This setting has to be consistent with the wireless networks that the adaptor intends to connect Open No authentication is needed among the wireless network Shared Only wireless devices using a shared key WEP Key identified are allowed to connecting each other 12 Parameter Description Authentication Type 802 1x Setting LEAP LEAP is a pre EAP Cisco proprietary protocol with many of the features of EAP protocols Cisco controls the ability of other vendors to implement this protocol so it should be selected for use only when limited vendor choice for client access point and server products is not a concern When you have set up LEAP authentication you have to enter the user name and password of your computer WPA WPA provides a scheme of mutual authentication using either IEEE 802 1x Extensible Authentication Protocol EAP authentication or pre shared key PSK technology It provides a high level of assurance to enterprises small businesses and home users that data will remain protec
11. case sensitive 802 1x Setting Certification CA Server Certificate issuer Any Trusted CA X F Allow intermidiate certificates Server name must match exactly Domain name must end in specified name 3 2 1 4 802 1x Setting CA Server Parameter Description Use Certificate Chain Certificate Issuer When the EAP authentication type such as TLS TTLS or PEAP is selected and required a certification to tell the client what server credentials to accept from the authentication server in order to verify the server you have to enable this function Choose the server from the list to issue the certificate If Any Trusted CA is selected any CA included in the list provided by the Microsoft Certificate Store is permitted Parameter Description Allow Intermediate Certificates A server designates an issuer as a trusted root authority by placing the issuer s self signed certificate which contains the issuer s public key into the trusted root certification authority certificate store of the host computer Intermediate or subordinate certification authorities are trusted only if they have a valid certification path from a trusted root certification authority Server Name Enter the authentication server name Server name must match exactly When selected the server name must match exactly the server name found on the certificate Domain name must end in When selected the server name fie
12. e adapter 1 What is the IEEE 802 11g standard 802 11g is the new IEEE standard for high speed wireless LAN communications that provides for up to 54 Mbps data rate in the 2 4 GHz band 802 11g is quickly becoming the next mainstream wireless LAN technology for the home office and public networks 802 11g defines the use of the same OFDM modulation technique specified in IEEE 802 11a for the 5 GHz frequency band and applies it in the same 2 4 GHz frequency band as IEEE 802 11b The 802 11g standard requires backward compatibility with 802 11b The standard specifically calls for A Anew physical layer for the 802 11 Medium Access Control MAC in the 2 4 GHz frequency band known as the extended rate PHY ERP The ERP adds OFDM as a mandatory new coding scheme for 6 12 and 24 Mbps mandatory speeds and 18 36 48 and 54 Mbps optional speeds The ERP includes the modulation schemes found in 802 11b including CCK for 11 and 5 5 Mbps and Barker code modulation for 2 and 1 Mbps Aprotection mechanism called RTS CTS that governs how 802 11g devices and 802 11b devices interoperate 2 What is the IEEE 802 11b standard The IEEE 802 11b Wireless LAN standard subcommittee which formulates the standard for the industry The objective is to enable wireless LAN hardware from different manufactures to communicate 3 What does IEEE 802 11 feature support The product supports the following IEEE 802 11 functions CSMA CA plus Acknow
13. ed Auto Based on the status of the network and automatically disable enable protection mode On Always enable the protection mode Off Always disable the protection mode There are several options including Auto 1 2 5 5 11 6 9 12 18 24 36 48 54Mbps for you to select When the Auto is selected the device will choose the most suitable transmission rate automatically The higher data rate you designated in the network the shorter distance is allowed between the adaptor and the wireless stations When the wireless mode is 802 11 B only the maximum data rate is 11Mbps 11b so that there are only Auto 1 2 5 5 11Mbps options you can select Tx Burst enables the adaptor to deliver better throughput in the same period and environment 21 Parameter Description Enable TCP Window Size Fast Roaming at 70dBm Turn Off RF Button CCX 2 0 LEAP Turn on CCKM Enable Radio Measurement Non Serving Channel Measurements Limit xxx milliseconds 0 2000 The TCP Window is the amount of data a sender can send ona particular connection before it gets an acknowledgment back from the receiver that it has gotten some of it When the Router or AP the adaptor is connecting to have set up the TCP Window you can enable the parameter to meet the data size for the Router or AP connection The larger TCP Window the better performance When you want to fast roaming to the network nearby without interc
14. epting the wireless connection especially the adaptor is applied to the multimedia application or a voice call you can enable the parameter The adaptor will fast roaming to the near network when the receive sensitivity signal strength is lower to the value you have set up If you want to turn off the radio of the adaptor temporarily click this button To turn on the radio click this button again CCX 2 0 Cisco Compatible Extensions is developed by Cisco for the radio monitoring and fast roaming During normal operation LEAP enabled client devices mutually authenticate with a new access point by performing a complete LEAP authentication including communication with the main RADIUS server When you configure your wireless LAN for fast re association however LEAP enabled client devices roam from one access point to another without involving the main server Using Cisco Centralized Key Management CCKM an access point configured to provide Wireless Domain Services WDS takes the place of the RADIUS server and authenticates the client so quickly that there is no perceptible delay in voice or other time sensitive applications When this parameter is enabled the Cisco AP can run the radio monitoring through the associated CCX compliant clients to continuously monitor the WLAN radio environment and discover any new APs that are transmitting beacons The Cisco AP can perform monitoring measurements through the CCX compliant clients
15. is check box This bar shows the signal strength level The higher percentage shown in the bar the more radio signal been received by the adaptor This indicator helps to find the proper position of the wireless device for quality network operation Display the noise level in the wireless environment 3 4 Statistics This option enables you to view the statistic information of the connection including transmit statistics and receive statistics You may reset the counters by clicking Reset Counter Topcom Wireless LAN Utility Link Status Site Survey Statistics Advanced About Profile Transmit Statistics Frames Transmitted Successfully 158 Frames Transmitted Successfully Without Retry 157 Frames Transmitted Successfully After Retry s 1 Frames Fail To Receive ACK After All Retries 0 RTS Frames Successfully Receive CTS 0 RTS Frames Fail To Receive CTS 0 Receive Statistics Frames Received Successfully 239 Frames Received With CRC Error 972 Frames Dropped Due To Out of Resource D Duplicate Frames Received 0 3 5 Advance This option enables you to configure more advanced settings for example wireless mode protection mode and etc Topcom Wireless LAN Utility E Link Status Site Survey Statistics Advanced About Profile Wireless mode 802 11 B G mix y B G Protection tuto z Bic 20 sE Tx Rate Auto z T Enat dio Measurer Tx BURST ALi Enable TCP Window Size I fpr
16. ld identifies a domain The specified name certificate must use a server name belonging to this domain or to one of its sub domains e g zeelans com where the server is blueberry zeelans com but it may be any name used in the certificate name field 3 3 Link Status From the Link Status option you can view all the information of the network you are connecting to Topcom Wireless LAN Utility Link Status Site Survey Statistics Advanced About Profile Status Wireless lt gt 00 C0 02 FF FC F2 Extra Info Link is Up TxPower100 Channel 11 lt gt 2462000 KHz Link Speed Tx Mbps 54 0 Rix Mbps 54 0 Throughput Tx Kbps 0 0 Rx Kbps 5 9 Good 100 mow MAA Good 100 dBm sinalstergh MEAN Normal 70 II ER RRRRRRREEE 18 Parameter Description Status Display the SSID and MAC ID of the network the adaptor is connecting to Extra Info Display the link status Channel Display the number of the radio channel and the frequency used Link Speed Mbps Throughput Kbps Link Quality dBm Signal Strength Noise Level for the networking Display the transmission and reception rate of the network The maximum transmission rate is 54Mbps Display the speed of data transmitted and received This bar indicates the quality of the link The higher the percentage the better the quality If you want to know the signal strength in the unit of dBm select th
17. ledge Protocol Multi Channel Roaming Automatic Rate Selection RTS CTS Feature Fragmentation Power Management 4 What is Ad hoc An Ad hoc integrated wireless LAN is a group of computers each has a Wireless LAN adapter Connected as an independent wireless LAN Ad hoc wireless LAN is applicable at a departmental scale for a branch or SOHO operation 5 What is Infrastructure An integrated wireless and wireless and wired LAN is called an Infrastructure configuration Infrastructure is applicable to enterprise scale for wireless access to central database or wireless application for mobile workers 25 6 Whatis BSS ID A specific Ad hoc LAN is called a Basic Service Set BSS Computers in a BSS must be configured with the same BSS ID 7 Whatis WEP WEP is Wired Equivalent Privacy a data privacy mechanism based on a 40 bit shared key algorithm as described in the IEEE 802 11 standard 8 What is TKIP TKIP is a quick fix method to quickly overcome the inherent weaknesses in WEP security especially the reuse of encryption keys TKIP is involved in the IEEE 802 11i WLAN security standard and the specification might be officially released by early 2003 9 Whatis AES AES Advanced Encryption Standard a chip based security has been developed to ensure the highest degree of security and authenticity for digital information wherever and however communicated or stored while making more efficient use of hardware and or sof
18. n keys For example 0123456aef or test1 128 bit Input 26 digit Hex values in the A F a f and 0 9 range or 13 digit ASCII characters including a z and 0 9 as the encryption keys For example 01234567890123456789abcdef or administrator 802 1x Setting Certification CA Server Authentication Type PEAP w Session Resumption Disabled v PEAP y TLS Smart Card Identity TTLS Md5 Challenge Use Client certificate ss Tunneled Authentication Protocol EAP MSCHAP v2 w Identity Password The IEEE 802 1X specification describes a protocol that can be used for authenticating both clients and servers on a network The authentication algorithms and methods are those provided by the Extensible Authentication Protocol EAP a method of authentication that has been in use for a number of years on networks that provide Point to Point Protocol PPP support as many internet service providers and enterprises do When an AP acting as an authenticator detects a wireless station on the LAN it sends an EAP Request for the user s identity to the device EAP or the Extensible Authentication Protocol is an authentication protocol that runs before network layer protocols transmit data over the link In turn the device responds with its identity and the AP relays this identity to an authentication server which is typically an external RADIUS server An example for MD5 Authen
19. on the non serving channels when this parameter is enabled It limits the channel measurement time The default value is 250 milliseconds 22 3 6 About By choosing this option you can click the hyperlink to connect the website for the information of the wireless chipset vendor and review basic information about the Utility such as the Driver Utility and EEPROM Version The MAC Address of the adaptor is displayed in the screen as well Topcom Wireless LAN Utility Link Status Site Survey Statistics Advanced About Profile TOPCOM Copyright C Topcom Europe All Rights Reserved RaContfig Version 1 1 5 0 Date 03 15 2006 Driver Version 1 0 4 0 Date 01 12 2006 EEPROM Version 1 3 Firmware Version 1 8 IP ddress 192 168 99 3 Phy_Address 00 0E 2E 82 D0 B7 Sub Mask 255 255 255 0 Default Gateway 192 168 99 1 3 7 Turbo Mode This adaptor supports specific ways to increase the data transfer rate at a time compress the data and decrease the waiting time to send the next data to the Routers or APs this feature known as Turbo Mode enables higher throughput than IEEE 802 11g standard Up to 54Mbps When the adaptor is connecting to the Routers or APs with the proprietary Turbo Mode feature the Turbo Mode will be enabled automatically without any configuration 23 24 4 Troubleshooting This chapter provides solutions to problems usually encountered during the installation and operation of th
20. stallation Guide Browse CD Wireless LAN User Guide EXIT www topcom net B Click Yes to process the installation if you accept the license agreement Topcom Wireless Network Card Setup Please read the following License Agreement ad the following licer ment Use the scroll bar to view this engineer decompile or disassemble the SOFTWARE PRODUCT except and only to the extent that such activity is expressly permitted by applicable law notwithstanding this limitation TOPCOM Tope Windows 2000 and Windows XP On the Topcom Web Site you can find the most recent device drivers software updates and user documentation WWW hittp www topeom net C If you need the adaptor to operate with better performance please choose the Optimize for performance to enable the Tx Burst mode Or you can choose Optimize for Wi Fi mode to let the adaptor run in standard wireless network Topcom Wireless Network Card Setup TxBur st or WiFi ot WiFi The system starts to install the software of the adaptor Please follow the instructions of the program to plug in the adaptor into the USB port of your computer And the system will automatically detect the adaptor Please plug in the RT2500 USB Wireless LAN Card on your computer Please click Finish to complete the installation RALINK Wireless Network Card Setup Setup has finished installing InstallShield 3 Configuration Utilit
21. ted and that only authorized users may access their networks For enterprises that have already deployed IEEE 802 1x authentication WPA offers the advantage of leveraging existing authentication databases and infrastructure WPA PSK It is a special mode designed for home and small business users who do not have access to network authentication servers In this mode known as Pre Shared Key the user manually enters the starting password in their access point or gateway as well as in each wireless stations in the network WPA PSK takes over automatically from that point keeping unauthorized users that don t have the matching password from joining the network while encrypting the data traveling between authorized devices WPA2 Like WPA WPA2 supports IEEE 802 1x EAP authentication or PSK technology It also includes a new advanced encryption mechanism using the Advanced Encryption Standard AES AES is required to the corporate user or government users The difference between WPA and WPA2 is that WPA2 provides data encryption via the AES In contrast WPA uses Temporal Key Integrity Protocol TKIP WPA2 PSK WPA2 PSK is also for home and small business The difference between WPA PSK and WPA2 PSK is that WPA2 PSK provides data encryption via the AES In contrast WPA PSK uses Temporal Key Integrity Protocol TKIP When you have set the Authentication Type to Open Shared WPA or WPA2 you can also enable IEEE 802 1x setting to use
22. this adaptor supports 64 128 bit WEP data encryption that protects your wireless network from eavesdropping It also supports WPA Wi Fi Protected Access feature that combines IEEE 802 1x and TKIP Temporal Key Integrity Protocol technologies Client users are required to authorize before accessing to APs or AP Routers and the data transmitted in the network is encrypted decrypted by a dynamically changed secret key Furthermore this adaptor supports WPA2 function WPA2 provides a stronger encryption mechanism through AES Advanced Encryption Standard which is a requirement for some corporate and government users This adapter is cost effective together with the versatile features it is the best solution for you to build your wireless network 1 1 Features Complies with the IEEE 802 11b and IEEE 802 11g 2 4GHz DSSS standards High data transfer rate up to 54Mbps Supports Turbo Mode to enhance the data transfer speed within the specific wireless network Supports 64 128 bit WEP WPA TKIP with IEEE 802 1x WPA2 AES with IEEE 802 1x functions for high level of security Supports the most popular operating system Windows 98SE Me 2000 XP 2003 Server Supports USB 2 0 1 1 1 0 interface Portable and mini size design 1 2 Specifications Standards IEEE 802 11b g Bus Type USB 2 0 Type A Frequency Band 2 4000 2 4835GHz Industrial Scientific Medical Band Modulation OFDM with BPSK QPSK 16QAM 64QAM 11g BPSK QPSK
23. tication IEEE 802 1x RADIUS RADIUS Access Client 7 Client ay Server ee Ne Aa x Er so mm SF QS SF ES Access Point ee A UA Mw y uy S ee Windows 2000 IAS Internet Authentication Service 1 Client requests to login the 3 Send username password to network RADIUS server 2 Login with username 4 Approve or deny user password login to the LAN 3 2 1 3 802 1x Setting Certification Parameter Description Authentication Type Session Resumption Identity Password Use Client Certificate The EAP authentication protocols this adaptor has supported are included as follows This setting has to be consistent with the wireless APs or Routers that the adaptor intends to connect PEAP amp TTLS PEAP and TTLS are similar and easier than TLS in that they specify a stand alone authentication protocol be used within an encrypted tunnel TTLS supports any protocol within its tunnel including CHAP MS CHAP MS CHAPv2 PAP and EAP MD5 PEAP specifies that an EAP compliant authentication protocol must be used this adaptor supports EAP MSCHAP v2 EAP TLS Smart Card and Generic Token Card The client certificate is optional required for the authentication TLS Smart Card TLS is the most secure of the EAP protocols but not easy to use It requires that digital certificates be exchanged in the authentication phase The
24. tware than previous encryption standards It is also included in IEEE 802 11i standard Compare with AES TKIP is a temporary protocol for replacing WEP security until manufacturers implement AES at the hardware level 10 Can Wireless products support printer sharing Wireless products perform the same function as LAN products Therefore Wireless products can work with Netware Windows 2000 or other LAN operating systems to support printer or file sharing 11 Would the information be intercepted while transmitting on air WLAN features two fold protection in security On the hardware side as with Direct Sequence Spread Spectrum technology it has the inherent security feature of scrambling On the software side WLAN series offer the encryption function WEP to enhance security and Access Control Users can set it up depending upon their needs 12 What is DSSS What is FHSS And what are their differences Frequency hopping spread spectrum FHSS uses a narrowband carrier that changes frequency in a pattern that is known to both transmitter and receiver Properly synchronized the net effect is to maintain a single logical channel To an unintended receiver FHSS appears to be short duration impulse noise Direct sequence spread spectrum DSSS generates a redundant bit pattern for each bit to be transmitted This bit pattern is called a chip or chipping code The longer the chip is the greater the probability that the original data can
25. y The Topcom Configuration Utility is a powerful application that helps you configure the USB adaptor and monitor the link status and the statistics during the communication process When the adaptor is installed the configuration utility will be displayed automatically This adaptor will auto connect to wireless device which has better signal strength and no wireless security setting Topcom Wireless LAN Utility Profile Link Status Site Survey Statistics Advanced About ssip Bssip Sig C Encrypt Authent Network T i O0 50 FC 8C D1 31 3 WEP Unknown Infrastruct O0 0E 2E 5F 48 26 6 None Unknown Infrastruct 00 50 FC 12 34 18 11 None Unknown Infrastruct The Topcom Configuration Utility appears as an icon on the system tray of Windows while the adaptor is running You can open the utility by double click on the icon In Windows XP there is a Windows Zero Configuration Tool for you to setup wireless clients If you want to switch to use Topcom configuration utility please follow one of the ways as below Right click the icon in the system tray and select Use Topcom Wireless LAN Configuration utility Use Topcom Wireless LAN Utility as Configuration utility 3 1 Site Survey When you open the Topcom Configuration Utility the system will scan all the channels to find all the access points stations within the accessible range of your adaptor and automaticall
26. y connect to the wireless device with the highest signal strength From the Site Survey all the networks nearby will be listed You can change the connection to another networks or add one of the networks to your own profile list Topcom Wireless LAN Utility Profile Link Status Site Survey Statistics Advanced About SSID BSSID Sig C Encrypt Authent Network T jerry D0 50 FC 8C D1 31 3 WEP Unknown Infrastruct ES PPEE_SIMON DO DE 2E 5F 48 26 6 None Unknown Infrastruct JAMIE 00 50 FC 12 34 18 11 None Unknown Infrastruct lt ME Connected lt gt PPEE_SIMON Rescan Connect Add to Profile Parameter Description Available Networks Rescan Button Connect Button Add to Profile Button This list shows all available wireless networks within range of your adaptor It also displays the information of the networks including the SSID BSSID Signal Strength Channel Encryption Authentication and Network Type If you want to connect to any networks on the list double click the item on the list and the adaptor will automatically connect to the selected network Click Rescan button to collect the new information of all the wireless networks nearby Click Connect to connect to the selected network Add the selected network to Profiles list 3 2 Profile The Profiles List is for you to manage the networks you connect to frequently You are able
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