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6.  What is 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.  What is 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. What 

is 

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 software 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 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. 

 

 

 

 

Содержание EW-7108PCg

Страница 1: ...8 80 02 2 1 11 1g g W Wi ir re el le es ss s L LA AN N P PC C C Ca ar rd d User Manual Version 1 1 Jul 2006...

Страница 2: ...arranties merchantability or fitness for any particular purpose Any software described in this manual is sold or licensed as is Should the programs prove defective following their purchase the buyer a...

Страница 3: ...paration between the equipment and receiver 3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 4 Consult the dealer or an experienced radio tech...

Страница 4: ...ipment and telecommunication terminal Equipment and the mutual recognition of their conformity R TTE The R TTE Directive repeals and replaces in the directive 98 13 EEC Telecommunications Terminal Equ...

Страница 5: ...1 1 Configuration 11 3 2 1 2 Authentication and Security 13 3 2 1 3 802 1x Setting Certification 17 3 2 1 4 802 1x Setting CA Server 18 3 3 Link Status 19 3 4 Statistics 20 3 5 Advance 20 3 6 QoS 23 3...

Страница 6: ...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 card supports WPA2...

Страница 7: ...orts the most popular operating system Windows 98SE Me 2000 XP 2003 Server Supports 32 bit Cardbus interface 1 2 Specifications Standards IEEE 802 11b g Interface 32 bit Cardbus Frequency Band 2 4000...

Страница 8: ...installation please check the items of your package The package should include the following items One PC Card One CD Driver Utility User s Manual One Quick Guide If any of the above items is missing...

Страница 9: ...m the CD Note2 The following installation was operated under Windows XP Procedures are similar for Windows 98SE Me 2000 2003 Server Note3 If you have installed the Turbo Wireless LAN PC Card driver ut...

Страница 10: ...ion Tool or the Ralink Configuration Tool for the card It is recommended to choose the Ralink Configuration Tool for the card Click Next to continue D If you need the card to operate with better perfo...

Страница 11: ...the software of the card Please follow the instructions of the program to plug in the card into the Cardbus slot of your computer And the system will automatically detect the card F Please click Fini...

Страница 12: ...ss device which has better signal strength and no wireless security setting The Ralink Configuration Utility appears as an icon on the system tray of Windows while the card is running You can open the...

Страница 13: ...8 Second Way A Right click the icon and select View Available Wireless Networks B Click Advanced C Uncheck Use Windows to configure my wireless network settings to enable the utility for the card...

Страница 14: ...connection to another networks or add one of the networks to your own profile list Parameter Description Available Networks This list shows all available wireless networks within range of your card It...

Страница 15: ...relative settings of the profiles including Profile Name SSID Channel etc This sign indicates the activated profile is been connecting This sign indicates the activated profile is not been connecting...

Страница 16: ...s You may specify a SSID for the card and then only the device with the same SSID can interconnect to the card If you want to add the network nearby to the profile list pull down the menu all the netw...

Страница 17: ...Auto mode is selected the card will auto switch the preamble mode depending on the wireless devices the card is connecting to RTS Threshold Minimum packet size required for an RTS Request To Send For...

Страница 18: ...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...

Страница 19: ...d 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 WPA NONE WPA NONE is de...

Страница 20: ...e wireless stations in the network WEP Key Key1 Key4 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 e...

Страница 21: ...on 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 transmi...

Страница 22: ...dating the server s certificate the client presents a client certificate to the server for validation Session Resumption There are Disabled Reauthentication Roaming SameSsid and Always selections for...

Страница 23: ...ty 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 subordina...

Страница 24: ...n and reception rate of the network The maximum transmission rate is 54Mbps Throughput Kbps Display the speed of data transmitted and received Link Quality This bar indicates the quality of the link T...

Страница 25: ...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 3 5 Advance This o...

Страница 26: ...g Only G This card 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 card to this mode Select Your Country Re...

Страница 27: ...ion before it gets an acknowledgment back from the receiver that it has gotten some of it When the Router or AP the card is connecting to have set up the TCP Window you can enable the parameter to mee...

Страница 28: ...authenticates the client so quickly that there is no perceptible delay in voice or other time sensitive applications Enable Radio Measurement When this parameter is enabled the Cisco AP can run the ra...

Страница 29: ...ct Link Direct Link Setup MAC Address Specify the MAC Address of the client card you want to direct link to and click Apply to add into DLS Status table Timeout Value Specify the timeout value for the...

Страница 30: ...ith the proprietary Turbo Mode feature the Turbo Mode will be enabled automatically without any configuration 3 9 SoftAP This card can run as a wireless AP The relative configurations of the AP includ...

Страница 31: ...he wireless cards connected to the AP should set up the same channel SSID The SSID up to 32 printable ASCII characters is the unique name identified in a WLAN The ID prevents the unintentional merging...

Страница 32: ...sync field Short Preamble 56 bits sync field Beacon ms Here defines the time between two beacons the default value is 100ms TX Power If you want to lower the transmit power of the AP for saving the po...

Страница 33: ...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 a...

Страница 34: ...bers This same key must be used on all of the wireless stations in the network Group Rekey Interval This function is available when using WPA PSK and WPA2 PSK encryption algorithm The key will change...

Страница 35: ...nect to the AP Reject All The wireless cards with the MAC Address listed in Access List will be rejected to connect to the AP MAC Address MAC Address is a unique identification for hardware devices in...

Страница 36: ...of the wireless cards connected to the AP Parameter Description MAC Address The MAC Address of the wireless cards connected to the AP AID The Association ID of current connection Power Saving Mode The...

Страница 37: ...event time and message You may clear the table by clicking Clear 3 9 5 Statistics The Statistics page displays the statistic information of the AP including transmit statistics and receive statistics...

Страница 38: ...33 3 9 6 About The About page displays the basic information about the Utility including Driver Utility and EEPROM Version The MAC Address of the card is displayed in the screen as well...

Страница 39: ...ludes the modulation schemes found in 802 11b including CCK for 11 and 5 5 Mbps and Barker code modulation for 2 and 1 Mbps B A protection mechanism called RTS CTS that governs how 802 11g devices and...

Страница 40: ...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 secur...

Страница 41: ...f the IEEE 802 11e WLAN QoS draft standard WMM adds prioritized capabilities to Wi Fi networks and optimizes their performance when multiple concurring applications each with different latency and thr...

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