User's Manual

PPPoE
Glossary of Terms 241
routing. Each of these packets is
separately numbered and
includes the Internet address of
the destination. The individual
packets for a given file may
travel different routes through
the Internet. When they have all
arrived, they are reassembled
into the original file at the
receiving end.
PPPoE
PPPoE (Point-to-Point Protocol
over Ethernet) enables
connecting multiple computer
users on an Ethernet local area
network to a remote site or ISP,
through common customer
premises equipment (e.g.
modem).
PPTP
The Point-to-Point Tunneling
Protocol (PPTP) allows
extending a local network by
establishing private “tunnels”
over the Internet. This protocol it
is also used by some DSL
providers as an alternative for
PPPoE.
R
RJ-45
The RJ-45 is a connector for
digital transmission over
ordinary phone wire.
Router
A router is a device that
determines the next network
point to which a packet should
be forwarded toward its
destination. The router is
connected to at least two
networks.
S
Server
A server is a program (or host)
that awaits and requests from
client programs across the
network. For example, a Web
server is the computer program,
running on a specific host, that
serves requested HTML pages or
files. Your browser is the client
program, in this case.
Stateful Inspection
Stateful Inspection was invented
by Check Point to provide the
highest level of security by
examining every layer within a
packet, unlike other systems of
inspection. Stateful Inspection
extracts information required for
security decisions from all
application layers and retains
this information in dynamic state
tables for evaluating subsequent
connection attempts. In other
words, it learns!