There are many old data-centric applications that, for
historical reasons, use direct modem connections to
exchange data between Client and Server. Nowadays,
local and global TCP/IP networks have made the direct
modem connection obsolete.

Here's why: When you use a direct modem connection,
you need to have a physical modem installed on each PC
that needs to exchange data. You also must use a
physical phone line. This makes the line busy and may
even be costly, if long distance calls are required.
Modem transfers are also not secure. A hacker doesn't
even need to have an access to your phone line. Your
data can be easily intercepted with a remote phone
line scanner. In a TCP/IP network, on the contrary,
you can use the power of a VPN (Virtual Private
Networking), SSH or any other secure tunnel to ensure
privacy and security.

There are a lot of reasons to move from a direct modem
connection to TCP/IP networking. But, how can you do

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