Introduction

Since version 2.3, OpenVPN can be built using PolarSSL as it's crypto backend, instead of OpenSSL. See ​https://polarssl.org/ for more information on PolarSSL.

Limitations compared to OpenSSL

Note that the PolarSSL variant of OpenVPN does not support the same feature set as the OpenSSL variant. The most prominent differences are listed in the latest ​README.polarssl.

Building the PolarSSL-enabled OpenVPN

OpenVPN 2.3 has full PolarSSL support. Get the sources from ​the download page, or get the most recent (potentially unstable) code ​from github.

To build using polarssl:

./configure --with-crypto-library=polarssl
make
make install

• Note: PolarSSL is now known as mbedtls