User manual ZONET ZEW1642S

[. . . ] Further, this company reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation to notify any person of such revision or changes. All brand and product names mentioned in this manual are trademarks and/or registered trademarks of their respective holders. I Wireless LAN PCMCIA Adapter Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection 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 communications. [. . . ] Channel: Shows the numbers of the radio channel used for the networking. Fragmentation Threshold: The size at which packets will be fragmented. RTS Threshold: Minimum packet size to require an RTS (Request To Send). For packets smaller than this threshold, an RTS is not sent and the packet is transmitted directly to the WLAN. . 7 Wireless LAN PCMCIA Adapter 3. 1. 3 WEP Setting Additional security can be achieved by using the WEP (Wired Equivalent Privacy) encryption. WEP encrypts each frame transmitted from the radio, using one of the keys entered from this panel. Enable the WEP (Wired Equivalent Privacy) option in order to activate WEP encryption for transmissions between the stations and the Access Point. WEP is an authentication algorithm, which protects authorized Wireless LAN users against eavesdropping. Encryption: Wired Equivalent Privacy (WEP) is implemented in the adapter to prevent unauthorized access. For more secure data transmissions, set encryption to "128-bit" or "64-bit. " The 128-bit setting gives a higher level of security. The setting must be the same for all clients in your wireless network (Default: None). HEX: You can enter the WEP Key in hexadecimal (0~9, a~f), 13 digit keys in 64 bits and 26digit key in 128bits. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct-sequence spreadspectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. 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. 16 Wireless LAN PCMCIA Adapter Chapter 6 Glossary A Ad-Hoc Mode - A client setting that provides independent peer-to-peer connectivity in a wireless LAN. An alterative setup is where PCs communicate with each other through an access point. 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. B Bandwidth - The transmission capacity of a given facility, in terms of how much data the facility can transmit in a fixed amount of time; expressed in bits per second (bps). Computers in a BSS must be configured with the same BSS ID. D Default Gateway - The routing device used to forward all traffic that is not addressed to a station within the local subnet. DHCP server and client - DHCP stands for Dynamic Host Configuration Protocol. [. . . ] This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in the hands of users around the globe. L 18 Wireless LAN PCMCIA Adapter LAN - A local area network (LAN) is a group of computers and associated devices that share a common communications line and typically share the resources of a single processor or server within a small geographic area (for example, within an office building). M MAC Address - 12-digit hexadecimal number that identifies a networking product on the network. Mbps (Megabits per second) - One million bits per second; unit of measurement for data transmission. N Network - A system that transmits any combination of voice, video and/or data between users. Node - A network junction or connection point, typically a computer or work station. O Open System - Is when the sender and the recipient do not share a secret key. Each party generates its own key-pair and asks the receiver to accept the (usually randomly) generated key. [. . . ]