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AVOIDING
THE INTERNET
Though
there are risks, in many circumstances the Internet remains the
appropriate medium for connecting remote users. However, if you
work in an environment where security is a paramount concern, there
are other options.
In
general, these rely on the use of either a private connection such
as a dedicated leased line or on systems that only allow calls from
predetermined phone numbers. Historically, modems connecting directly
to a RAS server have represented the bulk of the latter type of
connection. More recently, ISDN together with appropriate routers
have provided a more robust solution, albeit one usually only available
from fixed offices. Using the VPN technology normally applied to
Internet connections can further strengthen such systems.
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