User guide

12 MDX-ETHERNET User Guide
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4.7.5 VPN
A VPN (Virtual Private Network) is a method of using a non-secure or public network
that allows devices to be connected together as if they were connected on a private
network. A typical example would be the connection of two remote offices such as
London and New York. Each office would require a high speed Internet connection and
a firewall (or VPN device). In order to configure the VPN, encryption keys are
exchanged so that both offices can communicate. The data is then sent across the
Internet (or shared network) in an encrypted form, giving the illusion of a single
connected network (speed limitations may apply). This is generally used as a low-cost
alternative to a private leased line. Configuration of VPNs is beyond the scope of the
document.
4.8 Typical network connections
4.8.1 Single PC to MDX-ETHERNET
To connect a PC to the MDX-ETHERNET requires a crossover cable. This allows the
two devices to communicate without the use of a switch or hub.
Figure 4-3 Connecting a single PC to MDX-ETHERNET using a crossover cable
When purchasing network cables it is recommended that a different color (e.g. pink) is
used for crossover cables to allow easy recognition. If no cross-over cable you need to
connect via a switch
Some PCs and network switches provide auto-crossover correction and therefore the
need for a crossover cable may not be necessary. Refer to the PC or network switch
documentation for confirmation.
cross over cable
NOTE
NOTE