Owner's manual

AT-ARW256E User’s Guide
50
One of the configuration parameters transmitted to each network device is its default gateway.
This address is configured by the network administrators and it informs each personal computer
or other network device where to send data if the target station does not reside on the same
subnet as the source. If your machine can reach all stations on the same subnet (usually a
building or a sector within a building), but cannot communicate outside of this area, it is usually
because of an incorrectly configured default gateway.
What is SSID ?
A service set identifier (SSID) is a sequence of characters that uniquely names a wireless local
area network (
WLAN). This name allows stations to connect to the desired network when multiple
independent networks operate in the same physical area
What is WEP ?
Wired Equivalent Privacy (WEP) is a security protocol, specified in the
IEEE Wireless Fidelity (Wi-
Fi) standard, 802.11b, that is designed to provide a wireless local area network (WLAN) with a
level of security and privacy comparable to what is usually expected of a wired LAN. A wired local
area network (
LAN) is generally protected by physical security mechanisms (controlled access to
a building, for example) that are effective for a controlled physical environment, but may be
ineffective for WLANs because radio waves are not necessarily bound by the walls containing the
network. WEP seeks to establish similar protection to that offered by the wired network's physical
security measures by encrypting data transmitted over the WLAN. Data
encryption protects the
vulnerable wireless link between
clients and access points; once this measure has been taken,
other typical LAN security mechanisms such as password protection, end-to-end encryption,
virtual private networks (
VPNs), and authentication can be put in place to ensure privacy.