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OpenVPN Cookbook - Second Edition by Jan Just Keijser

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Analyzing performance using tcpdump

In this recipe, we will analyze the performance of an OpenVPN setup using the tcpdump utility. It is also possible to use the Wireshark utility, which is available for Linux, Windows, and Mac OS X. While this recipe does not cover any new OpenVPN functionality, it is useful to show how such an analysis can be made.

Getting ready

We use the following network layout:

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 CentOS 6 Linux and OpenVPN 2.3.11. The client was running ...

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