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Beginning OpenVPN 2.0.9 by Norbert Graf, Markus Feilner

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SSL/TLS security

The SSL/TLS library can be used for authentication and encryption purposes. This library is part of the OpenSSL software that is installed on any modern operating system. If available, SSL/TLS certificate-based authentication and encryption should always be the first choice for any tunnel that you create. The following part of this chapter takes the user's perspective as the starting point for understanding SSL/TLS certificate issues.

SSL, also known as TLS, is a protocol originally designed by Netscape Communications Corporation to ensure easy-to-use data integrity and authenticity for the fast growing Internet in the 1990s. Anybody using a modern browser can participate in encrypted communication. SSL/TLS is an outstanding technology ...

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