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94 EN/LZT 108 6377 R4 - September 2003
- N -
NAT
Short for Network Address Translation, which is an Internet standard that
translates a private IP address within one network to a public IP address,
either a static or dynamic. NAT provides a type of firewall by hiding internal
IP addresses and it also enables a company to use more internal IP
addresses.
NIC
Short for Network Interface Card, which is an expansion board you insert
into a computer so the computer can be connected to a network. Most NICs
are designed for a particular type of network, protocol, and media, although
some can serve multiple networks.
- P -
Peer-to-peer
Peer-to-peer architecture is a type of network in which each workstation
has equivalent capabilities and responsibilities. This differs from
client/server architectures, in which some computers are dedicated to
serving the others. Peer-to-peer networks are generally simpler, but they
usually do not offer the same performance under heavy loads.
Ping
A utility to determine whether a specific IP address is accessible. It works
by sending a packet to the specified address and waiting for a reply. Ping is
used primarily to troubleshoot Internet connections.
Port
In TCP/IP and UDP networks, an endpoint to a logical connection. The port
number identifies what type of port it is. For example, port 80 is used for
HTTP traffic.
POTS
Short for Plain Old Telephone Service, which refers to the standard
telephone service that most homes use. The POTS network is also called
the Public Switched Telephone Network (PSTN).
PPP
Short for Point-to-Point Protocol, a method of connecting a computer to the
Internet. PPP sends the computer's TCP/IP packets to a server that puts
them onto the Internet.
PPPoE
Acronym for Point-to-Point Protocol over Ethernet. PPPoE relies on two
widely accepted standards: PPP and Ethernet. PPPoE is a specification for
connecting the users on an Ethernet to the Internet through a common