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Section 5
PING
Port Triggering
PPP
PPPoE
PPTP
Private IP Address
Protocol
Public IP Address
R
RJ-11
RJ-45
5-8
A network utility 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."
A mechanism that allows incoming communication with specified
applications.
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.
Point-to-Point Protocol over Ethernet. Used by many DSL
Internet Service Providers for broadband connection.
Point-to-Point Tunneling Protocol encapsulates other protocols. It
is a new technology to create VPNs developed jointly by several
vendors.
An IP address assigned to a computer on the 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.
A formal set of rules and conventions for exchanging data.
Different computer types (for example PC, UNIX
can communicate if they support common protocols.
The IP address assigned by the service provider. A public IP
address is visible to devices on the Internet. See also Private IP
Address.
The most common type of connector for household or office
phones.
An 8-pin modular connector; the most common connector type for
10Base-T or 100Base-T Ethernet networks.
Glossary
®
, or mainframe)
WN825
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