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Protocol,
transmission
protocol
Client / Server
PPPoE
PPTP
VPN (Virtual
Private Network)
SINAUT MD740-1
Devices which communicate with one another must use the same
rules for this communication. They must "speak the same
language". Such rules and standards are collectively referred to as
a protocol or transmission protocol. Frequently used protocols are,
for example, IP, TCP, PPP, HTTP or SMTP. TCP/IP is the generic
term for all protocols based on IP.
In a client/server environment a server is a program or computer
which receives and answers queries from the client program or
client computer.
In data communication the term client is also used for the computer
which establishes a connection to a server (or host), i.e. the client
is the calling computer and the server (or host) is the called
computer.
Acronym for Point-to-Point Protocol over Ethernet. Based on the
standards PPP and Ethernet. PPPoE is a specification to connect
users by Ethernet to the Internet via a shared broadband medium
such as DSL, Wireless LAN or cable modem.
Acronym for Point-to-Point Tunneling Protocol. This protocol was
developed by Microsoft, U.S. Robotics and others to transmit data
securely between two VPN nodes (# VPN) via a public network.
A Virtual Private Network (VPN) connects several separate private
networks (subnets) via a public network, e.g. the Internet, to form a
shared network. Confidentiality and authenticity are ensured by
using cryptographic protocols. A VPN therefore provides an
inexpensive alternative to dedicated lines when it comes to setting
up a supraregional corporate network.
Glossary
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