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SSL VPN by Joseph Steinberg, Tim Speed

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Establishing Secure Tunnels Using SSL

Now that we understand what SSL is and how it works, let us discuss how SSL allows us to create tunnels.

Secure Tunnels

A secure tunnel between computers can best be understood as a secure channel of communication between two machines that have an insecure environment between them. The communications tunnel is like a tunnel under a river that allows automobiles to travel from point A on one side of the river to point B on the other side and prevents environmental elements like water from interfering with the traffic as shown in the following diagram:

Secure Tunnels

The communications tunnel allows communications between two ...

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