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Introduction 11
IntroductionInstallationConfigurationInternet AccessLinking NetworksRemote AccessSending FaxesSecurity Introduction
The following structure results when using the Internet instead of direct connections :
All participants have fixed or dial-up connections to the Internet. Expensive dedicated
lines are no longer needed.
1. All that is required is the Internet connection of the LAN in the headquarters. Special
switching devices or routers for dedicated lines to individual participants are superflu-
ous.
2. The subsidiary also has its own connection to the Internet.
3. The RAS PCs connect to the headquarters LAN via the Internet.
The Internet is available virtually everywhere and typically has low access costs. Signifi-
cant savings can thus be achieved in relation to switched or dedicated connections, espe-
cially over long distances.
The physical connection no longer exists directly between two participants; instead, the
participants rely on their connection to the Internet. The access technology used is not
relevant in this case: ideally is the use of broadband technologies such as DSL (Digital
Subscriber Line). But also a conventional ISDN line can be used.
The technologies of the individual participants do not have to be compatible to one
another, as would be the case for conventional direct connections. A single Internet
access can be used to establish multiple simultaneous logical connections to a variety of
remote stations.
The resulting savings and high flexibility makes the Internet (or any other IP network) an
outstanding backbone for a corporate network.
Head Office
Workstation in remote
access
Internet
LAN
LAN
Subsidiary
11


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