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Section 5 Glossary
5-8 WR850
PCMCIA
The Personal Computer Memory Card International Association
sets international standards for connecting peripherals to portable
computers. Laptop computers typically have a PCMCIA slot that
can hold one or two PC Cards to provide features such as
Ethernet connectivity.
ping
A network function that tests host reachability by sending a small
packet to the host and waiting for a reply. If you ping a computer
IP address and receive a reply, you know the computer is
reachable over the network. It also stands for “Packet InterNet
Groper.”
Port Triggering
A mechanism that allows incoming communication with specified
applications.
PPP
Point-to-Point Protocol is used to transport other protocols,
typically for simple links over serial lines. It is most commonly
used to access the Internet with a dial-up modem.
PPPoE
Point-to-Point Protocol over Ethernet. Used by many DSL Internet
Service Providers for broadband connection.
PPTP
Point-to-Point Tunneling Protocol encapsulates other protocols. It
is a new technology to create VPNs developed jointly by several
vendors.
Private IP Address
An IP address assigned to a computer on the WR850 LAN by the
DHCP server for a specified lease time. Private IP addresses are
invisible to devices on the Internet. See also Public IP Address.
Protocol
A formal set of rules and conventions for exchanging data.
Different computer types (for example PC, UNIX
®
, or mainframe)
can communicate if they support common protocols.
Public IP Address
The IP address assigned to the WR850 by the service provider. A
public IP address is visible to devices on the Internet. See also
Private IP Address.