User`s manual

121
WLAN Router
network mask
A network mask is a sequence of bits applied to an IP address to select the network
ID while ignoring the host ID. Bits set to 1 mean “select this bit” while bits set to 0
mean “ignore this bit.” For example, if the network mask 255.255.255.0 is applied to
the IP address 100.10.50.1, the network ID is 100.10.50, and the host ID is 1. See bi-
nary, IP address, subnet.
NIC
Network Interface Card
An adapter card that plugs into your computer and provides the physical interface
to your network cabling. For Ethernet NICs this is typically an RJ-45 connector. See
Ethernet, RJ-45.
packet
Data transmitted on a network consists of units called packets. Each packet conta-
ins a payload (the data), plus overhead information such as where it came from (so-
urce address) and where it should go (destination address).
ping
Packet Internet (or Inter-Network) Groper
A program used to verify whether the host associated with an IP address is online. It
can also be used to reveal the IP address for a given domain name.
port
A physical access point to a device such as a computer or router, through which
data ows into and out of the device.
PPP
Point-to-Point Protocol
A protocol for serial data transmission that is used to carry IP (and other proto-
col) data between your ISP and your computer. The WAN interface on the Wireless
Gateway uses two forms of PPP called PPPoA and PPPoE. See PPPoA, PPPoE.
PPPoA
Point-to-Point Protocol over ATM
One of the two types of PPP interfaces you can dene for a Virtual Circuit (VC), the
other type being PPPoE. You can dene only one PPPoA interface per VC.
PPPoE
Point-to-Point Protocol over Ethernet
One of the two types of PPP interfaces you can dene for a Virtual Circuit (VC), the
other type being PPPoA. You can dene one or more PPPoE interfaces per VC.
protocol
A set of rules governing the transmission of data. In order for a data transmission to
work, both ends of the connection have to follow the rules of the protocol.
remote
In a physically separate location. For example, an employee away on travel who
logs in to the company’s intranet is a remote user.