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OpenVPN Cookbook - Second Edition by Jan Just Keijser

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Using a client-side up/down script

In this recipe, we will use very simple up and down scripts on the client side to show how OpenVPN calls these scripts. By logging messages to a file, as well as the environment variables, we can easily see which information OpenVPN provides to the up and down scripts.

Getting ready

Set up the client and server certificates using the Setting up the public and private keys recipe from Chapter 2Client-server IP-only Networks. For this recipe, the server computer was running Fedora 22 Linux and OpenVPN 2.3.10. The client was running Windows 7 64 bit and OpenVPN 2.3.10. Keep the server configuration file, basic-udp-server.conf, from the Server-side routing recipe, from Chapter 2Client-server IP-only Networks.

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